Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dc883234699943…

MALICIOUS

PDF

415.4 KB Created: 2022-03-04 06:21:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: c5bc7d660b6d230ea9f5b6dcaeb24390 SHA-1: 249b3f846723c702bf7e1f38420191801dc0e5c7 SHA-256: c5dc88323469994396ca39683ce65393c80e9e89834f9d0f38425f787b90264d
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4466

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://cafij.co.za/XSRYdR1H?utm_term=inspirational+quotes+for+students+in+college+pdf PDF link annotation
    • https://sbsoftware.ro/admin/userfiles/file/jupidekeguwe.pdfIn PDF document text
    • http://studiotipaldo.com/userfiles/files/nawefigewagagizaxumelotiv.pdfIn PDF document text
    • http://cbstav.cz/file/85328931473.pdfIn PDF document text
    • http://www.bombillasconled.com/archivos/files/fejogisapatizu.pdfIn PDF document text
    • http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/162127481195b2---76633113239.pdfIn PDF document text
    • https://bluetact.com/locktactyuma/userfiles/file/94211400278.pdfIn PDF document text
    • https://dbhattacharjee.com/ckfinder/userfiles/files/kilabuduvovozanitowe.pdfIn PDF document text
    • https://almudenafernandez.co/ckfinder/userfiles/Files/paromop.pdfIn PDF document text
    • https://gencshow.com/upload/ckfinder/files/liwizizapiwexulivab.pdfIn PDF document text
    • http://fujieshubao.com/zk/UploadFile/file/2022022618091273499.pdfIn PDF document text
    • http://potya.com/70117221855.pdfIn PDF document text
    • https://grupahatak.pl/admin/_fck_files/file/26688801109.pdfIn PDF document text
    • http://www.aceitunasdelguadalhorce.es/ckfinder/userfiles/files/lizedinifij.pdfIn PDF document text
    • https://alwillislifecenter.org/ckfinder/userfiles/files/90066451229.pdfIn PDF document text
    • https://newline-eg.com/userfiles/file/23649375411.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/161fad0bea17dd---pajebufanigevog.pdfIn PDF document text
    • http://armoire-atex.com/js/kcfinder/upload/files/89404397953.pdfIn PDF document text
    • http://globalsublimation.net/uploadfile/files/5678988839.pdfIn PDF document text
    • https://bor-diing.com/upload/files/vinofabowefiv.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16204868bcd4b9---lebonerafogilagovubofa.pdfIn PDF document text
    • http://tcihk.com/userfiles/rifivunofedif.pdfIn PDF document text
    • https://christavedelaar.nl/bestanden/files/16955362968.pdfIn PDF document text
    • https://kamarkosong.com/contents/files/37855906772.pdfIn PDF document text
    • http://oldadmin.k12cart.com/media/files/98197857350.pdfIn PDF document text
    • http://atrsara.ir/resource/files/70296692919.pdfIn PDF document text
    • http://cobweb.janci.net/upload/files/gogesupipewup.pdfIn PDF document text
    • http://tokstar.com/_UploadFile/Images/file/tegoxeleberetokobuj.pdfIn PDF document text
    • https://aymfly.com/aym_image/files/4911089732.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/07f23ada3796ba27fbaeef047abd2738/ludagutudupezavepokuti.pdfIn PDF document text
    • http://sriagasthiyarastro.com/FCKeditor/userfiles/file/65446188541.pdfIn PDF document text
    • http://re-ezumi.com/admin/kcfinder/upload/files/joxaji.pdfIn PDF document text
    • http://wadirumshootingstars.com/userfiles/file///715999089.pdfIn PDF document text
    • https://greassi.com/editor_upload/file/pabokex.pdfIn PDF document text
    • https://www.kossuth-csepel.hu/inc/kcfinder/upload/files/nokizi.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
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005efcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFCB 16160 bytes
SHA-256: 4ac500d6e3c0ff81b9d7bba6b662cc1b6c57f4f8b05facc13edcda647588841f
font_01_sfnt_off00060544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60544 10992 bytes
SHA-256: dfc41056d99def04bab2df1a4f319f4f1e39e199ea09c1529a550b4a815d1554
font_02_sfnt_off00061e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E64 20976 bytes
SHA-256: 8c03c30244c755419b61c65f542d54f524ebfe0acc5e5f930b1a9dbee944f118
font_03_sfnt_off000655b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655B4 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9