Malicious PDF — malware analysis report

Static analysis result for SHA-256 3450b6faa167f869…

MALICIOUS

PDF

84.6 KB Created: 2020-11-14 10:53:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4b335bbc810e5e96fb496dfc5c64779f SHA-1: f5eea2947cac42242610d5ab5f21bdfc95879cb4 SHA-256: 3450b6faa167f869428c3219fa09dd4123d486bd721763e8b8991be3505bf722
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, with one prominent URL pointing to a suspicious domain. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to drive traffic to potentially malicious sites. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8810

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 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.
  • 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://trafffe.ru/aws?utm_term=cape+cod+canal+fishing+report+september+2019 PDF link annotation
    • https://davijoxo.weebly.com/uploads/1/3/4/3/134357566/derit.pdfIn PDF document text
    • https://bawilawuvibowe.weebly.com/uploads/1/3/4/4/134401702/72ce5a65.pdfIn PDF document text
    • https://jonoxuxiwef.weebly.com/uploads/1/3/4/3/134314506/1342530.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f943eb72f7f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410222/normal_5f930e4b627dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419424/normal_5f989debefd2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424024/normal_5fada08848a59.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/034d0f57-a3e1-41da-ae33-9ebbab055e8f/download_avatar_for_blender_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/needham_high_school_calendar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2ac02a3-7b9b-46c3-add8-3bb299707d9a/zebeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87387c89-bda0-43cb-9373-8b6f71b51181/15205734788.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/americo_paredes_elementary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a964ce7-f689-4874-bd06-76de0db83e82/31897212430.pdfIn PDF document text

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