Malicious PDF — malware analysis report

Static analysis result for SHA-256 1edd602869b638c6…

MALICIOUS

PDF

46.5 KB Created: 2021-09-08 12:13:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 3e13c4dc6057ebb6e1acdbf1c4e1fcdc SHA-1: 70bfb79b01a383f7a3c99fbc053fb48660d4a4bc SHA-256: 1edd602869b638c689f3f58e0e1026576cab39e5056c2211a46dd5e2a093f5bf
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9564

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://ketchas.ru/uplcv?utm_term=apa+citation+handout+6th+edition+pdf PDF link annotation
    • http://bakersfield.thepokeluau.com/uploads/files/99480197442.pdfIn PDF document text
    • http://m2m2design.com/userfiles/zazubuzevu.pdfIn PDF document text
    • http://yizhu580.com/ckfinder/userfiles/files/11715582705.pdfIn PDF document text
    • http://massimosusto.eu/userfiles/files/93418874836.pdfIn PDF document text
    • http://heydarbaba.org/resimler/files/vutosivefa.pdfIn PDF document text
    • https://ostrichpharmaceuticals.com/userfiles/file/vakuz.pdfIn PDF document text
    • http://sintjorisparochie.nl/userfiles/file/dexiw.pdfIn PDF document text
    • https://eyetracking.pl/userfiles/file/70750505099.pdfIn PDF document text
    • http://romengo.com/ckfinder/userfiles/files/96494532495.pdfIn PDF document text
    • http://philipwillettelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rapoxawataxaxuton.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/161315f1f8071e---10458453142.pdfIn PDF document text
    • https://sausalito.com/wysiwygfiles/file/13979376796.pdfIn PDF document text
    • http://nuestratierrapremios.com/campannas/file/2645942377.pdfIn PDF document text
    • http://www.johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/98238219865.pdfIn PDF document text
    • http://fishngrill.iorderfoods.com/uploads/files/9392327111.pdfIn PDF document text
    • http://indianmailbox.com/assets/images/userfiles/files/39406874357.pdfIn PDF document text
    • https://dimensionshoppe.com/alpha/ckfinder/userfiles/files/45619630106.pdfIn PDF document text
    • https://drproperty.in/userfiles/file/gugeko.pdfIn PDF document text
    • http://happy-land.hu/editor_up/disidogolu.pdfIn PDF document text
    • http://www.kyousei-fukushi.or.jp/system/ckfinder/userfiles/files/80692105341.pdfIn PDF document text
    • https://interativacorretora.com/fotosempresaIn PDF document text

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