Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f8a03f7e3a0483f…

MALICIOUS

PDF

59.7 KB Created: 2020-12-25 07:26:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e55348a2f2911850c78e90d9385c874 SHA-1: 2c6162d6f87761f3e5b79041e392f9766c9de67e SHA-256: 1f8a03f7e3a0483f61a6f98f2450de0b293a151f70651cd4b59e120becd0c345
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm with numerous external URLs, many of which point to other PDF documents. The primary URL, 'https://trafficel.ru/strik?utm_term=visual+boy+advance+gba+emulator+download', suggests a lure for software downloads. The presence of a ClamAV detection and ML classifier flagging indicates malicious intent, likely to redirect users to malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9055

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://trafficel.ru/strik?utm_term=visual+boy+advance+gba+emulator+download
    • https://cdn-cms.f-static.net/uploads/4381091/normal_5f8de68fd1045.pdf
    • https://cdn-cms.f-static.net/uploads/4472484/normal_5fbd7640a41ee.pdf
    • https://cdn-cms.f-static.net/uploads/4414687/normal_5f98347f2e89c.pdf
    • https://static.s123-cdn-static.com/uploads/4454054/normal_5fcd77f6ce764.pdf
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5fbe17204cdc6.pdf
    • https://galavalo.weebly.com/uploads/1/3/4/4/134464717/4071374.pdf
    • https://cdn.sqhk.co/sakixowofeg/Qqgheja/slackline_obstacle_course.pdf
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/wunexowozipizit_litul.pdf
    • https://cdn-cms.f-static.net/uploads/4385021/normal_5f9f398699493.pdf
    • https://folemazilepi.weebly.com/uploads/1/3/1/1/131164248/bagar.pdf
    • https://uploads.strikinglycdn.com/files/21291cdf-23e6-4ee3-a7af-49a1e7f7c6c5/zujupaxavebofevekorote.pdf

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