Malicious PDF — malware analysis report

Static analysis result for SHA-256 9385f02877d1371c…

MALICIOUS

PDF

50.6 KB Created: 2020-11-24 23:53:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 47f49a194bda57de012085f7b2b6af67 SHA-1: dac4eaa898fb2eba05332bc88962785859836440 SHA-256: 9385f02877d1371c416398c7c504c9057dd9ebfa9e9fac0e3b060ab921e68c7c
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple external links, including one to 'trafffi.ru' with a 'mortgage calculator' UTM term, suggesting a phishing or credential harvesting attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a non-clustered link farm on disposable hosting, further supporting a malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6781

Heuristics 4

  • 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 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://trafffi.ru/aws?utm_term=mortgage+calculator+spreadsheet+google+docs PDF link annotation
    • https://segawerod.weebly.com/uploads/1/3/4/3/134313685/1648044.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380080/normal_5f8b3c996571c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384628/normal_5f9537df35d19.pdfIn PDF document text
    • https://juvirafiwak.weebly.com/uploads/1/3/4/3/134307718/2b1f3c.pdfIn PDF document text
    • https://mogidudurunupiz.weebly.com/uploads/1/3/2/6/132695636/katulepunusuvenag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413456/normal_5f95860645843.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371790/normal_5f887e932c052.pdfIn PDF document text
    • https://jomixemaletid.weebly.com/uploads/1/3/4/6/134659672/sabaletitobamizamida.pdfIn PDF document text
    • https://rixapozati.weebly.com/uploads/1/3/4/4/134456921/xofaba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447906/normal_5faa11410d0a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406771/normal_5fbbdde1f39c4.pdfIn PDF document text
    • https://sefedajexoxoj.weebly.com/uploads/1/3/4/4/134479396/7787732.pdfIn PDF document text
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/4792390.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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