Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da1895d474bea39…

MALICIOUS

PDF

58.2 KB Created: 2021-04-04 23:24:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ca58f6cfe914b7a95e2760533ea91f8 SHA-1: ba9a09d1565625260afdcf79ca982beaa4c8d9c7 SHA-256: 6da1895d474bea39e5d7b75ea777fe8ef2dd61d5e3c1424923be6717e3888b6d
94 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to wkhtmltopdf and a date, suggesting it was generated programmatically to appear as a legitimate document, likely a lure for the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9503

Heuristics 3

  • 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://baarspo.ru/strik?utm_term=how+to+program+rca+systemlink+3+universal+remote
    • https://cdn-cms.f-static.net/uploads/4368229/normal_604318272b25c.pdf
    • http://mefuxorimuba.22web.org/bioshock_guide.pdf
    • http://nnorm-id.com/71183490613pk3fc.pdf
    • https://cdn-cms.f-static.net/uploads/4451756/normal_604d32c425e36.pdf
    • http://alfa-quest.ru/accounting_information_system_in_business_organizationnfn5m.pdf
    • https://cdn-cms.f-static.net/uploads/4506159/normal_60477ccf98c53.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lixasifasi/gomulonirejidaveliw.pdf
    • https://s3.amazonaws.com/wibedubosateg/hello_neighbor_alpha_4_apksum.pdf
    • https://s3.amazonaws.com/zamemigojat/24691814650.pdf
    • http://wewixokadun.epizy.com/gogaduf.pdf
    • http://magoravir.epizy.com/84635001996.pdf
    • https://s3.amazonaws.com/dinigugaxej/lean_six_sigma_green_belt_study_guide.pdf
    • http://fozilixugijuva.epizy.com/adobe_lightroom_online.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d78a.bin
bed399aa67fc5f3b4cd3d906a3b4727201260e14a4985967f5de1a6ebff319ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD78A 5696 bytes

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