Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a685ea58c5695b…

MALICIOUS

PDF

343.0 KB Created: 2022-03-01 10:19:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: d9a315e7b4962ae5e83d50b0d5f91c76 SHA-1: d3f571e0d8f0b0b2accd1223aa18286c54ca8d5c SHA-256: 18a685ea58c5695b209bfe0e1f8e3f1eb3589850062fe3098122ee623f942055
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6641

Heuristics 6

  • 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.
  • 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 http://sanraimundo.cl/dyn/uploads/file/24761473725.pdf In PDF document text
    • http://draftingfloorplan.com/ckfinder/userfiles/files/gijepezekuwuwik.pdfIn PDF document text
    • http://pol2-simf.ru/userfiles/file/38373869471.pdfIn PDF document text
    • http://bandodesign.com/assets/ckeditor/kcfinder/upload/files/digufal.pdfIn PDF document text
    • http://climacom.eu/userfiles/files/lefalamikopukoza.pdfIn PDF document text
    • http://hepiran.com/cache/fck_files/file/83289207877.pdfIn PDF document text
    • http://insuralead.com/userfiles/file/wupitiwokuralotagivi.pdfIn PDF document text
    • https://thermocalnepal.ramjanki.com/ckeditor/kcfinder/upload/files/tutizon.pdfIn PDF document text
    • http://fkm-lux.by/var/upload/file/30700672032.pdfIn PDF document text
    • http://neapol-m.ru/usr/file/21677001921.pdfIn PDF document text
    • http://bilasiparacollege.org/assets/kcfinder/upload/files/21826153496.pdfIn PDF document text
    • https://www.phuketvillarentalandservices.com/ckfinder/userfiles/files/62902172687.pdfIn PDF document text
    • http://janeblondsalon.cz/files/upload/files/jenivegopolomibafakulid.pdfIn PDF document text
    • https://hgd.hr/admin/kcfinder/upload/files/xavubolugoz.pdfIn PDF document text
    • http://gamulchi.org/userfiles/file/44528271363.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/64d78811272cbcd7c08c0fc113720dc5/gonovufukofozazax.pdfIn PDF document text
    • https://turdv.ru/SITE/files/editor/file/28972142940.pdfIn PDF document text
    • http://www.ambatownship.com/ckfinder/userfiles/files/81109930925.pdfIn PDF document text
    • http://demo-jesma.shopcloud.es/ckfinder/userfiles/files/nonalazuwebifuzu.pdfIn PDF document text
    • https://icnj.net/ckeditor/ckfinder/userfiles/files/98340811951.pdfIn PDF document text
    • http://uktohabbarijamalta.com/files/file/66197215227.pdfIn PDF document text
    • http://kutyakozmetikustanfolyam.hu/kcfinder/upload/files/57727993862.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/162130b466ab38---kebudukorasifida.pdfIn PDF document text
    • http://www.anespo.pt/sgc/Assets/Plugins/CKEditor/kcfinder/Uploads/files/9345384166.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1620ba6a66a36f---22137261758.pdfIn PDF document text
    • https://find-domain.lazy-online-shop.com/app/webroot/userfiles/files/javodotusalivujo.pdfIn PDF document text
    • http://4sale.hu/upload/file/42769364066.pdfIn PDF document text
    • http://pellevah.com/upload/files/zezeburivob.pdfIn PDF document text
    • http://4sale.hu/upload/file/kedirazesigufoxor.pdfIn PDF document text
    • https://sisharp.com/editor_upload/file/65952141090.pdfIn PDF document text
    • http://balashixa.inhome360.ru/admin/ckfinder/userfiles/files/sosudere.pdfIn PDF document text
    • http://jowinbio.com/upload/files/202202230200535629.pdfIn PDF document text
    • http://noavarservice.com/ckfinder/userfiles/files/58516101561.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=blank+cornell+notes+template+printablePDF link annotation
    • 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 extracted file (font_00_sfnt_off0004eb06.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004eb06.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004eb06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EB06 10820 bytes
SHA-256: b234ae734f7cf9fa89c61036e79d05b86c17873164912280543817e31ae8073f
font_01_sfnt_off000503c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x503C8 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00051ae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51AE3 18540 bytes
SHA-256: 81eb66a6499d3146fdfbc1e48e5dce3db9f8c499913405a5da6bed4b5456bc1c