Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb5e2716d0d33f8f…

MALICIOUS

PDF

59.1 KB Created: 2020-11-11 21:49:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d07632167e7c677010a2ecd62bf8aed2 SHA-1: 9feb9e2a20b4fc90d8229bb2aec65bd7c6b48bbe SHA-256: bb5e2716d0d33f8f979301073757d36752a1b5e956d1641a8a9837e2dbb14067
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, indicative of a link farm or a phishing lure, as flagged by the PDF_SEO_LINK_FARM heuristic. The embedded URL `https://traffnew.ru/aws?utm_term=business+studies+notes+class+11+pdf` suggests a pretext to drive traffic to a malicious site. ClamAV detection and ML classification further support its malicious nature, likely as a phishing or trojan distribution mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8850

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffnew.ru/aws?utm_term=business+studies+notes+class+11+pdf
    • https://joxenawofin.weebly.com/uploads/1/3/4/3/134342561/434585f2649.pdf
    • https://gudojovevisepu.weebly.com/uploads/1/3/4/3/134314990/peduwenojevakal.pdf
    • https://cdn-cms.f-static.net/uploads/4382617/normal_5fa5c52ab7c40.pdf
    • https://cdn-cms.f-static.net/uploads/4448094/normal_5f9f20151aec2.pdf
    • https://cdn-cms.f-static.net/uploads/4367941/normal_5f8dd9c6f1608.pdf
    • https://folemazilepi.weebly.com/uploads/1/3/1/1/131164248/3d68810.pdf
    • https://cdn-cms.f-static.net/uploads/4389376/normal_5f913b4c1b3c2.pdf
    • https://cdn-cms.f-static.net/uploads/4374968/normal_5f89ad6bd1927.pdf
    • https://fusesekomufe.weebly.com/uploads/1/3/1/6/131606177/pitowuwata.pdf
    • https://relugudikovok.weebly.com/uploads/1/3/4/2/134265752/vuwapal.pdf
    • https://cdn-cms.f-static.net/uploads/4374983/normal_5f8bb250387a2.pdf
    • https://s3.amazonaws.com/zoromexemuzid/pududokemowide.pdf
    • https://s3.amazonaws.com/dirijazi/34249821895.pdf
    • https://s3.amazonaws.com/tixedujegibex/libavavafuxifaw.pdf
    • https://s3.amazonaws.com/juvetaso/rukodujupozexofalikatezuk.pdf

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