Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dff7fd6b12777e9…

MALICIOUS

PDF

69.5 KB Created: 2021-01-06 16:16:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 38d1b270f1a417a1aab0077e9b87422f SHA-1: 78cc67d87f3ef93bd78d527a1ffd84bada2b7012 SHA-256: 7dff7fd6b12777e9111fee17ac51afb7a816a34c37b49bafbd3fa8b3ab01c404
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

The PDF contains a malicious redirector link pointing to 'ggtraff.ru', which is a known malicious infrastructure. Heuristics indicate a browser installation lure, suggesting a social-engineering tactic to trick users into downloading malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://ggtraff.ru/aws?utm_term=antivirus+free++avg+latest+version In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403117/normal_5f9f3b45c69d5.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/dYiiYA0/64660795583.pdfIn PDF document text
    • https://cdn.sqhk.co/nalujujoso/hjfoPie/rc_car_simulator_games_online.pdfIn PDF document text
    • https://cdn.sqhk.co/pujapipiwat/rjeSibO/8987090970.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482636/normal_5fea26a5d3748.pdfIn PDF document text
    • https://cdn.sqhk.co/pajerelo/jdageje/57369897567.pdfIn PDF document text
    • https://cdn.sqhk.co/nejajevafode/hhhic4N/guess_the_word_cheat.pdfIn PDF document text
    • https://cdn.sqhk.co/gujadozede/icAgghc/xbox_one_x_hyperspace_ebay.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisedetu/jj0higd/coloring_puzzles_printable.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/UiauiZf/excursiones_msc_cruceros_mediterraneo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476416/normal_5fa5b46ea3d5c.pdfIn PDF document text
    • https://cdn.sqhk.co/definuseju/hVUjjie/flying_car_city_3d_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e212af18-a03b-49c5-92aa-14487352fc08/3767398104.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/20488798267.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0adcc4b7-f2d2-475b-8918-2b2f32c9d537/daviboga.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_off0000d424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD424 4984 bytes
SHA-256: 8c0205e566b8ab8e3c724d26119db6dd83fd6620062e870532f87c561e7cc012
font_01_sfnt_off0000e532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE532 10580 bytes
SHA-256: 00e70015bc05ef2ecbb73de89fe7afbf1844986a754bba568a424126701113a4

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