Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6dfb555c7b77624…

MALICIOUS

PDF

74.5 KB Created: 2021-01-11 12:17:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3da881803ba4c3873320fa59d6a450f SHA-1: 759aeed5ada0d2358ec6ed71bee3be7bb347e989 SHA-256: d6dfb555c7b776245e16e9faf79931f0ef67993d338936d4a96ebe78dff60d2b
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains an embedded URI pointing to 'traffset.ru', which is likely a phishing or malware distribution domain. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into navigating to malicious sites, potentially leading to further compromise.

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://traffset.ru/aws?utm_term=any+video+recorder+windows+10
    • https://cdn.sqhk.co/ponesigis/QNjbije/nifazirimurure.pdf
    • https://static.s123-cdn-static.com/uploads/4420449/normal_5ffbe30ba2aa1.pdf
    • https://cdn.sqhk.co/gogojelawov/yXdihgh/56406557389.pdf
    • https://cdn.sqhk.co/kitolitik/ijjJHKc/putefimodotisurokike.pdf
    • https://site-1175722.mozfiles.com/files/1175722/retro_game_box_400_in_1.pdf
    • https://static.s123-cdn-static.com/uploads/4417992/normal_5ff17b11524fe.pdf
    • https://cdn.sqhk.co/fuwunikuneg/ehaJjjW/jobikutulepupeguxalip.pdf
    • https://site-1176272.mozfiles.com/files/1176272/45860159378.pdf
    • https://cdn-cms.f-static.net/uploads/4446166/normal_5fb7052d12c1a.pdf
    • https://cdn.sqhk.co/mekizojo/vjeEWjc/lokekagap.pdf
    • https://cdn.sqhk.co/ratijojitud/R6x61qH/story_mode_gta_5_money_cheat_ps4.pdf
    • https://cdn-cms.f-static.net/uploads/4369307/normal_5fa47c428fe21.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dorobukasawituw/bevakujuvumademename.pdf
    • https://s3.amazonaws.com/widofafane/nuvomukerowanajumakif.pdf
    • https://s3.amazonaws.com/medaliwifufugel/44427110757.pdf
    • https://s3.amazonaws.com/numegubowalonan/choices_hack_latest_version.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_off0000e960.bin
c4977d2ffa9da734263bc024eac93062dac797209cc10b08a947afdae0200839		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE960 5128 bytes
font_01_sfnt_off0000fb05.bin
86d832e7df08077785508956b70f921889af2558bd06a7d51d51b005cccc2a22		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB05 9944 bytes

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