Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ec372fb37e95e3e…

MALICIOUS

PDF

57.2 KB Created: 2021-02-26 01:00:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 85b1cfc85b7e8614ab59bddf74dfa1c2 SHA-1: 29e40319faeeedcdd4457884eb00ece80a71f08d SHA-256: 1ec372fb37e95e3e8d5faf8ee93a44e1305479efdb6b4412e1cc41fce28975f3
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many pointing to disposable domains, indicating a link farm designed to distribute traffic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://crophysi.ru/award?keyword=john+deere+gator+hpx+diesel+manual PDF link annotation
    • https://cdn.sqhk.co/ributexovek/ididzQ6/79741288138.pdfIn PDF document text
    • https://kojaxinepizoju.weebly.com/uploads/1/3/1/8/131856409/1023a3cf8.pdfIn PDF document text
    • https://vetasokimatajed.weebly.com/uploads/1/3/5/2/135296406/farejate.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/kodajemesafixiwukipokiz.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/thank_you_for_being_late_friedman_review.pdfIn PDF document text
    • https://cdn.sqhk.co/zugeketinog/qhfiejd/marvel_stadium_restricted_view_seating.pdfIn PDF document text
    • https://cdn.sqhk.co/foxidagon/V6sEEih/30636983638.pdfIn PDF document text
    • http://tidirakozodawon.getenjoyment.net/lijurezovalunipej.pdfIn PDF document text
    • http://desokore.medianewsonline.com/46373865047.pdfIn PDF document text
    • https://vulodimov.weebly.com/uploads/1/3/4/8/134880101/wadonamizonomepibu.pdfIn PDF document text
    • https://fekoguto.weebly.com/uploads/1/3/4/4/134491689/0473a306cef5.pdfIn PDF document text
    • https://pigukoziluluz.weebly.com/uploads/1/3/4/8/134896600/7975471.pdfIn PDF document text
    • https://pevidutapare.weebly.com/uploads/1/3/0/7/130740538/65db5563a3.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/xutedirokeruxas.pdfIn PDF document text
    • https://xanugobolenaz.weebly.com/uploads/1/3/4/3/134371028/joriged-ripudazabuxu.pdfIn PDF document text
    • http://ralirajuz.atwebpages.com/15157886625.pdfIn PDF document text
    • http://tososite.onlinewebshop.net/nanajuwefidevivixebaka.pdfIn PDF document text

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