Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fb938e2999129cb…

MALICIOUS

PDF

71.0 KB Created: 2021-01-05 20:01:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5b2970e65ce19291cf663c7c81fd3354 SHA-1: b13be54962d56bf7b671933026c21e3ab1c2c28f SHA-256: 7fb938e2999129cb1d532483f3b4abf2c54ce008796aad0ed4abb1d5dceb7c2d
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains embedded URLs, one of which, 'https://traffking.ru/123?utm_term=guide+dev+anand', is identified as a potential phishing lure. The document body is heavily obfuscated, but the presence of external URIs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=guide+dev+anand PDF link annotation
    • https://cdn.sqhk.co/bufutoje/2jchhOa/at_t_prepaid_phones_32gb.pdfIn PDF document text
    • https://cdn.sqhk.co/wokowuvawuz/idgdphh/.pdfIn PDF document text
    • https://cdn.sqhk.co/xeposetuge/5ieVcic/981374505.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381988/normal_5f8f75fdd411d.pdfIn PDF document text
    • https://cdn.sqhk.co/xurazegoba/QNtibhf/neha_kakkar_song_ring_djpunjab.pdfIn PDF document text
    • https://cdn.sqhk.co/febutatesu/jdgiShg/26846334276.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385612/normal_5fcea8732ee78.pdfIn PDF document text
    • https://cdn.sqhk.co/xakelafu/jas4jhQ/98395103394.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490366/normal_5ff22dbc56617.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/hi7ihgn/cards_against_humanity_multiplayer_unblocked.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/popok.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/10035921771.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/browser_aloha_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/sinomoxos.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/jufiborarekukidar.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d69b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD69B 4604 bytes
SHA-256: 6cb9c5728cabef59d8274a4c9aada8c806d0f1cbe75530eb38b3417975f69b26
font_01_sfnt_off0000e662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE662 12452 bytes
SHA-256: 35f58e1d5c8fa663dba679b96170fb23090c71dc3ae4845c14cb50517b4007bf