Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9120fc9e3c1542c…

MALICIOUS

PDF

47.6 KB Created: 2021-02-25 18:06:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3fd86b6b6c97f86dccbaae4d19248c40 SHA-1: da46160ef3e616bc6054e78235443a40766b2f6d SHA-256: f9120fc9e3c1542c7bf6e04d0d1e9c2d1d9c9f5681921ff4baba872198e9d896
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were extracted, the presence of numerous suspicious URLs suggests the document is designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7170

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://seumenha.ru/award?keyword=how+to+read+death+note+lifespan PDF link annotation
    • http://fasekafalig.scienceontheweb.net/nozurata.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427274/normal_603338351bad1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454995/normal_5fc78f2aaeb9f.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/37355780069.pdfIn PDF document text
    • http://terem.space/aisc_design_guide_for_base_platesm11tj.pdfIn PDF document text
    • http://zhigina.ru/wudoguvudezmdbu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412575/normal_5fda8a0f83969.pdfIn PDF document text
    • http://wejnpowk.space/luduniparizerogajabiri02ia.pdfIn PDF document text
    • https://cdn.sqhk.co/lokutibu/2hcihie/boss_punch_polo_shirt.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/2541670139.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/38213682020.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/12912619739.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/messi_animated_video.pdfIn PDF document text

Related samples 6

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