Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ed85a3cc239a54e…

MALICIOUS

PDF

68.5 KB Created: 2020-11-13 14:13:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 621bc834454cf0e666849d47315e5bfd SHA-1: f17907f05e4a256c58ee7eaf0c7c206a8665f4ed SHA-256: 3ed85a3cc239a54e5b6a14ac7d2f06141de1a7deb3fa2e0507843881b86e0b9d
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 'https://traffmen.ru/aws?utm_term=details+wow+classic+guide'. This indicates the document's primary purpose is to lure the user to this external site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffmen.ru/aws?utm_term=details+wow+classic+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383806/normal_5f92285dc8aee.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/warapagefasovi/last_episode_of_dragon_ball_gt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/750db1eb-0432-4c0f-bcbc-7e3bafc8a192/density_of_gasoline_kg_l.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/85238271510.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cb39fc1-3728-4b63-910b-798d99c9aced/lovifekudixexa.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/razixetebijewazejapev.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/rollercoaster_tycoon_3_platinum_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/81367584179.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/xilazofogixugaxazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/950ba1b2-cdd9-4436-b5e9-76835ecbb59e/33792102549.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_off0000d0c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C6 5100 bytes
SHA-256: b730e1193ccba8aa7f2888fa4120f985ababda4d79630cc87c5595b65f49ce18
font_01_sfnt_off0000e24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24C 10428 bytes
SHA-256: ff7f77dcfc0c052b949de72c2fa3b68a2d296d5285fc019e229ca5637602d626