Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ce07e70c1c76c49…

MALICIOUS

PDF

70.5 KB Created: 2020-11-18 09:29:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 40493e2c9e87d26e4cf595fdf7700220 SHA-1: ba83b34fdfde5c82918a548e867b0d4a18f1f593 SHA-256: 3ce07e70c1c76c49c8e5e6b6ef5f2dd3156eb06d4b02d594cb4b7b64602b0a3b
154 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'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

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
  • 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.
  • 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=the+chimney+sweeper+analysis+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/70093689700.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b7d0ae2-3a13-41ca-bcea-2fba8ad0eeea/87120477259.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/85296122173.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2273ab3-7dc0-4c29-9a6e-a5f3bb2587cc/96948199958.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba9aef97-44e5-4914-9688-307b2e1553f4/overstreet_comic_book_price_guide_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/south_ridge_apts_greenville_sc.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/25754655373.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9046e1a3-87c8-4873-8f48-d24948588b49/the_merry-_go-_round_broke_down.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/the_lottery_questions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/loremiwoxonore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48d0bb1a-cfed-41b0-8229-66a22c720afb/vudopomatewamemuw.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/32833270652.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_off0000d527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD527 5540 bytes
SHA-256: 872e83668596659eb3505a660c2dbca34ca2633d9c8768c9388f9f1ebaf1e6ae
font_01_sfnt_off0000e7eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7EB 10844 bytes
SHA-256: bf5471cd223c1f7f9be319c558d157b77da7c4bbf70a715999647b05ac00f64d

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