Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ff93673b41002e…

MALICIOUS

PDF

48.0 KB Created: 2020-11-11 06:01:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 21ca134d5a96a981a6ba89e66c15b1c2 SHA-1: 7af2d59417ea200d8eadf046fd37932610cb7f12 SHA-256: 76ff93673b41002e62e9dbb4bc42d7f229134c3bc4f08aeef01869ae4640fe39
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of the primary links, 'https://trafffi.ru/123?keyword=luciano+restaurants+mass', suggests a potential phishing or SEO manipulation attempt. The ML classifier and ClamAV detection further support its malicious nature, indicating it's likely a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6450

Heuristics 4

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?keyword=luciano+restaurants+mass
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f91eff689305.pdf
    • https://menelaxewo.weebly.com/uploads/1/3/4/3/134362368/debozazofume-wesalokat-wikujinujofisef-jexezipow.pdf
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/8582769.pdf
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5f8731ba3d452.pdf
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/6594323.pdf
    • https://cdn-cms.f-static.net/uploads/4380403/normal_5fa485a98fdbc.pdf
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f89e47292a6d.pdf
    • https://cdn-cms.f-static.net/uploads/4409607/normal_5f9e259e66d01.pdf
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/lafelixopipama.pdf
    • https://lefasibemaji.weebly.com/uploads/1/3/4/5/134589759/reradiponiz.pdf
    • https://tasibitasu.weebly.com/uploads/1/3/4/5/134530233/sanupowosenedub_fugulolobexawog_wuluvupod_xixurajov.pdf
    • https://s3.amazonaws.com/nafibanefexex/sett_framework_webinar.pdf
    • https://uploads.strikinglycdn.com/files/9d48a1ad-a00d-4531-b541-4dd890365654/5826982855.pdf
    • https://s3.amazonaws.com/xatojem/the_rock_and_fossil_record_answer_key.pdf

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