Malicious PDF — malware analysis report

Static analysis result for SHA-256 9276fec82f24aa82…

MALICIOUS

PDF

68.7 KB Created: 2020-11-11 20:55:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f52c7f5ef69639ec2878228d8a841a6 SHA-1: 931ff3f580310c6c0302f3cca1536a3c504f135f SHA-256: 9276fec82f24aa8274dc3f2f08cb4e4448be82da434e60c58fbc0ac79c74d5dc
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'traffking.ru', which is likely a phishing or malware distribution site. The document body text, though heavily obfuscated, includes terms related to 'pubg animation video', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://traffking.ru/aws?utm_term=pubg+animation+video
    • https://cdn-cms.f-static.net/uploads/4416665/normal_5f9b25560a4bf.pdf
    • https://cdn-cms.f-static.net/uploads/4369917/normal_5f8b3f2ab830e.pdf
    • https://cdn-cms.f-static.net/uploads/4386084/normal_5f99303ee8057.pdf
    • https://cdn-cms.f-static.net/uploads/4405654/normal_5f94644d59d5b.pdf
    • https://cdn-cms.f-static.net/uploads/4374847/normal_5f96fcb977299.pdf
    • https://cdn-cms.f-static.net/uploads/4414176/normal_5f9cceb76048d.pdf
    • https://cdn-cms.f-static.net/uploads/4381083/normal_5f8d9f8212eff.pdf
    • https://cdn-cms.f-static.net/uploads/4372963/normal_5f8b59b11168a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/teximikamukubo/historic_city_directories_online.pdf
    • https://uploads.strikinglycdn.com/files/7eddf239-52c2-4c5c-bd22-b24fe886f553/73353951734.pdf
    • https://s3.amazonaws.com/juvuraguvutoxif/puben.pdf
    • https://s3.amazonaws.com/fejenijovekozu/vapofanuxosiko.pdf
    • https://uploads.strikinglycdn.com/files/3728ea3b-2e7d-419c-a057-881a441d9c56/assalamu_alaikum_walaikum_assalam_ringtone.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3c8.bin
c1d42f73e0840d28332007dfdd11d173e2576142e14bce05558f9fea9e5a899a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C8 5040 bytes
font_01_sfnt_off0000e4e9.bin
932d2f7f70b5557ba47252fdfd8c7a2c8a2207e53436b56f5a88a2544297a3f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E9 9896 bytes

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