Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a78e92eda3c25c…

MALICIOUS

PDF

210.3 KB Created: 2022-03-02 04:48:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: f956bc2042a955bef4e13a6da115f70d SHA-1: e478569c9d3362a8a2b3ad09f07d206b43da57ca SHA-256: 18a78e92eda3c25ca86d04d7a1ccfe66ee9106ef04a786cdaa99747ac8ae0f87
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6903

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ragaz.co.za/XSRYdR1H?utm_term=songflower+serenade+guide PDF link annotation
    • https://aiaciran.org/cache/fck_files/file/60877736085.pdfIn PDF document text
    • https://samsungdvm.net/upload/ckfinder/files/59183471102.pdfIn PDF document text
    • https://inprovitpuertorico.com/ckfinder/userfiles/files/99878869897.pdfIn PDF document text
    • http://ultrarelaxedcbd.com/newerac2c/userfiles/file/zusasa.pdfIn PDF document text
    • http://aescantabria.es/upload/fckeditor/file///vegijoboniregelirulume.pdfIn PDF document text
    • http://yokosohk.com/files/fckfiles/file/47515626999.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/e46bd38a845d6282f028878e5aa0a9d9/tebofuxawavizi.pdfIn PDF document text
    • https://3zslitomysl.cz/admin/editor/kcfinder/upload/files/87522824772.pdfIn PDF document text
    • http://ballmillfactory.com/d/files/4911780172.pdfIn PDF document text
    • http://grupomagister.com.br/kcfinder/upload/files/bineted.pdfIn PDF document text
    • http://citty.org/images/uploads/file/27085475196.pdfIn PDF document text
    • http://lamekatus.ee/uploads/ckeditor/files/pulirajodu.pdfIn PDF document text
    • http://www.globalconference.info/kcfinder/upload/files/desumedotisom.pdfIn PDF document text
    • https://companydemo.opusviewdev.com/app/webroot/js/image/files/jugoso.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16217ff220ab07---9549526850.pdfIn PDF document text
    • http://nellion.ru/upload/files/tibimut.pdfIn PDF document text
    • http://y-mirai.biz/js/kcfinder/upload/files/zolafilivizexi.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1620c29fe0e6bd---30004202987.pdfIn PDF document text
    • https://sibois.eu/userfiles/file/sibabip.pdfIn PDF document text
    • http://35ct1.com/images/ckImageFiles/files/jefagofatebedegimo.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16213b5bd8806f---76550351201.pdfIn PDF document text
    • https://www.abrasco.org.br/ckfinder/userfiles/files/89659996228.pdfIn PDF document text
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1620c820b9051d---7298648444.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/oumhrcrv97dagrfo1mfjg5mtpu/25647742086.pdfIn PDF document text
    • http://border-collie.ru/sites/default/files/file/55969268794.pdfIn PDF document text
    • http://re-ezumi.com/admin/kcfinder/upload/files/batobonofolibepovik.pdfIn PDF document text
    • http://bn-biz.com/userData/board/file/gizir.pdfIn PDF document text
    • http://kazbani.ru/kcfinder/upload/files/fafegupakulugoxorikile.pdfIn PDF document text
    • http://www.jobsincrete.gr/images/_user_na/file/19019318361.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16206954f57290---28731993394.pdfIn PDF document text
    • http://banderlogclub.ru/kcfinder/upload/files/sulatuvigokitulijix.pdfIn PDF document text
    • https://triatlonshop.cz/userfiles/file/xojunusiluz.pdfIn PDF document text
    • http://mojaksiegowa.net/userfiles/file/zejepowukedaxenu.pdfIn PDF document text
    • https://paixaodecristopi.cinemadossertoes.com/kcfinder/files/96404612955.pdfIn PDF document text
    • http://www.smartusb.info/images/library/File/50611947520.pdfIn PDF document text
    • http://daeryuhealthcare.com/ckupload/files/vukimepapax.pdfIn PDF document text
    • http://ladispensadicampagna.it/uploads/assets/file/4045346556.pdfIn PDF document text
    • https://srccaa.bdbabymart.com/app/webroot/ckfinder/userfiles/files/51621091882.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/2e9eeb55bdfd698bfd6d0ce8bab5a4b6/piropoduvevat.pdfIn PDF document text
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/1621c6f95b8f32---luperimigelimojutedo.pdfIn PDF document text
    • http://hmed.vn/upload/files/64101794994.pdfIn PDF document text
    • http://schunk-app.com/js/kcfinder/upload/files/92061243383.pdfIn PDF document text
    • http://kientrucmoi.com.vn/admin/kcfinder/upload/files/83521712894.pdfIn PDF document text
    • http://vladekoservis.ru/files/23874020929.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/c0254f231f1a1ef773d33ce6a11700fc/31870006882.pdfIn PDF document text
    • http://sineadstone.com/userfiles/file/29971821816.pdfIn PDF document text
    • http://job.nspu.ru/ckeditor/kcfinder/upload/files/85928288123.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    +6 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002d793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D793 10692 bytes
SHA-256: 3aafccc0a2a99876ce105a7dc3155a2046d031096f984f217fa34d242b9cf024
font_01_sfnt_off0002f00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F00E 19044 bytes
SHA-256: a950473ec71c782cbabe7d62da64a31b5fcf626dc1867573ddaa708bb2aae719
font_02_sfnt_off000321ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x321CA 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9