Malicious PDF — malware analysis report

Static analysis result for SHA-256 683723344069821b…

MALICIOUS

PDF

106.1 KB Created: 2021-01-25 08:49:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 25a4ba764b45799f50abfc73c9807992 SHA-1: a50192512c064431d517d4465d2b8c98410fe161 SHA-256: 683723344069821bcb238db768de29c4fea951df8fd2882be98e5247c96c13d1
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffking.ru'. The ML classifier also flagged this PDF with high confidence. The presence of embedded URLs and the 'Urgency / deadline lure' heuristic suggest a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the nature of the redirector and the ML detection strongly indicate malicious intent, likely to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=apex+legends+bangalore+guide+reddit In PDF document text
    • http://avit0.cc/best_goal_goal_predictions_today4fg8d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404723/normal_5fcb0f533fc7e.pdfIn PDF document text
    • http://reduslimitalia.site/135868445724xxpq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454429/normal_5fcef5bf8bb9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450046/normal_6006641110e3a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493890/normal_60013f10e38e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500882/normal_5fcbc633b2e1b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479223/normal_5fee6f5d73766.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422638/normal_5ff2fe97bf651.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485318/normal_600a82281a7a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496818/normal_600cf5aabb78a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373779/normal_6000da172dd1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492593/normal_6007a877523e8.pdfIn PDF document text
    • http://activa-fb.com/shogun_near_me9zz7x.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/tesasubawalozan/certificate_of_appreciation_template_sponsor.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/gesofidefapikezuwilijomo.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/exchange_public_folder_size_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/zunezatotepe.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/15684044640.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/31144442294.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_off000160a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160A2 5324 bytes
SHA-256: 7d4894c4f0feb215c39afb66e0447a4ea1f0eee9fe39c6871a53908d72d0f18f
font_01_sfnt_off000172c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x172C7 11968 bytes
SHA-256: 4e94abed745e314a52f8759ffb73aafbb38274915925797a7d2281d535375c91

Open this report in the interactive analyzer, or submit your own file for analysis.