Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cee95f6d478e07f…

MALICIOUS

PDF

57.2 KB Created: 2021-03-18 04:10:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa87edec8f747e10f0b377350cc2f228 SHA-1: 1ebb82d0c5b47804971085ec6332c8ad0768efeb SHA-256: 3cee95f6d478e07fc0482498e33462ba92b53092bf0ed063992bd1bc238b4c7b
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF uses an image-based lure, typical of phishing campaigns, to trick users into clicking external links. The presence of numerous external PDF links, some pointing to potentially malicious domains, suggests an attempt to distribute further malicious content or redirect users to phishing sites. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7005

Heuristics 5

  • 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.
  • 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-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 57 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://baarspo.ru/award?keyword=in+christ+alone+sheet+music+pdf
    • https://cdn-cms.f-static.net/uploads/4372100/normal_6048a213df94d.pdf
    • https://static.s123-cdn-static.com/uploads/4451369/normal_5fdfb5e191acc.pdf
    • http://maturibcgj.space/apple_music_family_invite_android03hjo.pdf
    • https://zidimegaga.weebly.com/uploads/1/3/0/9/130969389/390959.pdf
    • https://dudererojafa.weebly.com/uploads/1/3/4/3/134362298/d4c72.pdf
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/telek.pdf
    • https://kufurana.weebly.com/uploads/1/3/1/4/131482954/2207625.pdf
    • https://kufesivewafe.weebly.com/uploads/1/3/1/3/131384244/5831309.pdf
    • http://grampus-shop.com/45040182509uolwy.pdf
    • https://gejamuxubidiz.weebly.com/uploads/1/3/4/6/134688077/tolatanosazifa_vuzawuzemagabu_setukinewoten_fulokasukezos.pdf
    • http://fuluwube.22web.org/towokalowegevemefusulet.pdf
    • https://cdn-cms.f-static.net/uploads/4366036/normal_601bee4520b53.pdf
    • https://tuwagufo.weebly.com/uploads/1/3/3/9/133999840/zijodexip.pdf
    • http://dimax.website/supuzopagogezobhhda8.pdf
    • https://cdn-cms.f-static.net/uploads/4484834/normal_601a573d07f5a.pdf
    • http://wamikesaximilub.22web.org/30170437825.pdf
    • https://static.s123-cdn-static.com/uploads/4379231/normal_5fcf5a3862875.pdf
    • http://dogurof.epizy.com/top_10_cloud_computing_companies_in_china.pdf
    • https://3df06c22-1e8a-4082-8cc2-a0fdc0609706.filesusr.com/ugd/d86e81_c75fd4a2a8f3465d80f316d4b0b0366a.pdf?index=true
    • https://c4e42e93-254c-4ba8-b495-737f84002742.filesusr.com/ugd/ddb60a_bf0fd67cd5e74f5b8b3d6d9227d8172a.pdf?index=true
    • https://1ceef7f3-d523-4f80-a0a4-3aed54d3d17a.filesusr.com/ugd/48841a_e33f6dff89084baba61a771d03e3272c.pdf?index=true

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