Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee944fb3af1e3c29…

MALICIOUS

PDF

64.0 KB Created: 2021-04-06 22:00:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75855612b895020f4c6f418183923033 SHA-1: c6af2463813e55cb7f8abc7be54f0c85d6ac01cc SHA-256: ee944fb3af1e3c29a1c01bc0887a38f6c846c9df1ca18697a679ff1e2a7e28e2
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file is classified as malicious by ML and ClamAV, and it contains numerous embedded URLs pointing to disposable hosting. The document body, though heavily obfuscated, suggests a lure related to 'blister in the sun guitar tab pdf'. The presence of a link farm on disposable domains indicates a probable phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8267

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://fokemale.ru/123?utm_term=blister+in+the+sun+guitar+tab+pdf
    • https://static.s123-cdn-static.com/uploads/4391893/normal_5fca6d2740186.pdf
    • https://fetozala.weebly.com/uploads/1/3/4/6/134678703/5191667.pdf
    • http://vuxilenusip.mypressonline.com/daledovovopiwegowusal.pdf
    • https://static.s123-cdn-static.com/uploads/4489852/normal_5fc59719eb007.pdf
    • https://static.s123-cdn-static.com/uploads/4484821/normal_5ffdc33b0e606.pdf
    • https://jemiliwolozeli.weebly.com/uploads/1/3/4/8/134870182/kudazezalixawaze.pdf
    • http://suvonenexazu.mywebcommunity.org/femaxexarig.pdf
    • http://badge-verification-center.com/winky_lux_lip_balm_coconut1cj1x.pdf
    • https://cdn-cms.f-static.net/uploads/4408483/normal_602ec69a878ba.pdf
    • http://monongzhlh.space/70_s_music_live_radioqkg8l.pdf
    • http://pejazadajenatew.getenjoyment.net/26683649866.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fijumusuxolegoj.atwebpages.com/konozesimugezuj.pdf
    • https://uploads.strikinglycdn.com/files/18db8a7b-42dd-4d46-a45c-578e3518a794/samsung_galaxy_note_20_ultra_2020_release_date.pdf
    • https://uploads.strikinglycdn.com/files/5dfaa0e8-1d2f-443e-bdea-ed954cb035b5/how_to_reset_morton_water_softener.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc48.bin
5ce0beaf74d16ea187c2923022817002e9b4a8fb12e18b4db442b5767543aee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC48 5492 bytes
font_01_sfnt_off0000deeb.bin
9f3785533eee4add8e310f93194e613b72018cc4a172f3f48a71ca2120e76a87		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEB 10980 bytes

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