Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbdb75c9f8b1325e…

MALICIOUS

PDF

41.3 KB Created: 2020-11-25 10:52:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4ee349b935c56d20782bf6c6a2e8ff1 SHA-1: c5735a44d61f9d1c9996d0a07505c7ed6006d453 SHA-256: bbdb75c9f8b1325e0b8b7072380c773faed715b576770176003c6a065696b28d
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded external links, typical of a tactic to redirect users to malicious sites. The ClamAV detection and ML classifier further support its malicious classification. The document body is heavily obfuscated, but the presence of numerous external URLs, including those hosted on weebly.com and traffnew.ru, indicates a likely intent to download and execute further stages of malware or lead users to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7539

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 41 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://traffnew.ru/strik?utm_term=puil+2011+pdf
    • https://damoleruli.weebly.com/uploads/1/3/0/7/130776580/5205757.pdf
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/dd9b521.pdf
    • https://rogosibaf.weebly.com/uploads/1/3/4/5/134590501/58db3f2ecbf85.pdf
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/vajomepidibaxi.pdf
    • https://mipumitazolepi.weebly.com/uploads/1/3/4/4/134495795/5406820.pdf
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/9927791.pdf
    • https://uploads.strikinglycdn.com/files/f598f7ba-ac8d-46fe-b797-fe17d727e8a1/kusizima.pdf
    • https://s3.amazonaws.com/kezemiradigu/a_dance_to_the_music_of_time.pdf
    • https://s3.amazonaws.com/rijaliwiguvex/jamie_eason_live_fit_phase_2_workouts.pdf
    • https://s3.amazonaws.com/divelikubapiwaj/gimisurovigo.pdf
    • https://uploads.strikinglycdn.com/files/cccd73c8-6305-4d7e-b54f-f9cd17088c26/nexunenopewomu.pdf
    • https://uploads.strikinglycdn.com/files/9f11b913-d551-4ec8-8c21-b239f49b4d25/64429310585.pdf
    • https://uploads.strikinglycdn.com/files/658661fc-9cd0-4da9-8e5b-128ea6e12f3a/monin_vs_torani.pdf
    • https://s3.amazonaws.com/batiku/teks_mahalul_qiyam_barzanji.pdf
    • https://s3.amazonaws.com/matogapibelifiv/hot_dog_world_milkshake_flavors.pdf
    • https://s3.amazonaws.com/rorives/lividadokafugepawobuvela.pdf

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