Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f15290643115255…

MALICIOUS

PDF

47.6 KB Created: 2020-11-18 04:27:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ae9b8fde228487e2459aa8fda098a95 SHA-1: 0bc09138da4ccd8471a29bf4c0aade7c26e679b6 SHA-256: 9f15290643115255507b486152b49cc57a07da09feccd82d0da35e3ed2cf05aa
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only document with an action trigger, typical of a phishing lure. It contains multiple external links, including one pointing to 'trafftec.ru', which is likely the primary malicious destination. The ClamAV detection and ML classifier further support its malicious nature, indicating it's a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7170

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 47 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://trafftec.ru/strik?utm_term=hdd+regenerator+torrent
    • https://cdn-cms.f-static.net/uploads/4451567/normal_5f9f6fabbdd24.pdf
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/watokifijesomozebef.pdf
    • https://cdn-cms.f-static.net/uploads/4406820/normal_5f9264719eff0.pdf
    • https://xigepeseforala.weebly.com/uploads/1/3/4/5/134508125/1453758.pdf
    • https://cdn-cms.f-static.net/uploads/4376609/normal_5fa4b8eb2bc71.pdf
    • https://uploads.strikinglycdn.com/files/fe949f3c-4ff5-45ba-9bfb-da6b6d6a6ece/osceola_county_warrants.pdf
    • https://s3.amazonaws.com/subud/fumupifudobabukisifedalul.pdf
    • https://s3.amazonaws.com/mijedusovineti/2839324963.pdf
    • https://s3.amazonaws.com/vasagesorajirem/44315162780.pdf
    • https://uploads.strikinglycdn.com/files/38f2a331-af2a-4a37-8089-e13ad230a783/2014_jeep_wrangler_stereo_wiring_diagram.pdf
    • https://uploads.strikinglycdn.com/files/450df945-6ab6-4156-8ecb-f25388af5821/can_am_instruction_manuals.pdf
    • https://s3.amazonaws.com/lixisariwulo/70855558179.pdf
    • https://uploads.strikinglycdn.com/files/29ea5d86-4aa2-4b72-9a06-74c7433ba5e6/50428273793.pdf

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