Malicious PDF — malware analysis report

Static analysis result for SHA-256 7495b7028aa789ba…

MALICIOUS

PDF

63.9 KB Created: 2021-06-02 00:18:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9740f7d7e59ba26d2cc9dc1ac96678e SHA-1: 7ed5801dfc60388a8d3b77cb8b9533e46fb8be59 SHA-256: 7495b7028aa789baa237bde104293e730ccb2c3ba58e741137de513b4bb7984c
154 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm, suggesting a malicious intent to redirect users. The ClamAV detection and ML classifier further support its malicious nature. The document body, though heavily obfuscated, contains references to 'crush crush hacked version', indicating a potential lure for users interested in such content, likely leading to phishing or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8630

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://irlanc.ru/pbw?utm_term=crush+crush+hacked+version
    • https://xipunozelizu.weebly.com/uploads/1/3/1/3/131382486/c5cf7ada.pdf
    • https://cdn-cms.f-static.net/uploads/4466659/normal_6036ce0ceafbd.pdf
    • https://renezotutumiw.weebly.com/uploads/1/3/5/3/135343322/tudisa_zarupavowomizuk_zurow_mapoduruvekuwew.pdf
    • https://cdn-cms.f-static.net/uploads/4504922/normal_5fd6370d21f5b.pdf
    • https://cdn-cms.f-static.net/uploads/4450428/normal_6035667bef0e8.pdf
    • https://static.s123-cdn-static.com/uploads/4463538/normal_5ff788ee5fdfa.pdf
    • https://cdn-cms.f-static.net/uploads/4490116/normal_601b42b1cc096.pdf
    • https://cdn-cms.f-static.net/uploads/4418755/normal_6054f74606155.pdf
    • https://cdn-cms.f-static.net/uploads/4469860/normal_5fdc4ea11c295.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a29acdd3-212a-4ff9-b9ac-bf90851464fd/74193905490.pdf
    • http://vajaxasave.pbworks.com/f/how_to_set_up_ravpower_filehub.pdf
    • http://bilabegape.pbworks.com/w/file/fetch/144480771/zewomivewozomodupesofe.pdf
    • http://dobifapig.pbworks.com/f/how_to_connect_airpods_pro_on_android.pdf
    • http://xuresasadox.pbworks.com/w/file/fetch/144456345/best_free_music_sequencer_app_android.pdf
    • http://poxanoralanu.pbworks.com/f/62992060879.pdf
    • http://nosiravuga.pbworks.com/f/descargar_mods_para_street_legal_racing_redline.pdf
    • https://uploads.strikinglycdn.com/files/4d078a6c-f2bb-414e-9b49-a2ef720af773/nuance_power_standard_1.2_download.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebf5.bin
d85783500a15fead248e4cb730edd7e568a34de63b8e5e8a13196fa345363598		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF5 5024 bytes

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