Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7e1362760e514a9…

MALICIOUS

PDF

63.5 KB Created: 2021-01-02 06:09:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: b90952c8022c196eedac2fcea1b1d447 SHA-1: 1896960fceb68ed7df5923be6f879268cb2a41a7 SHA-256: a7e1362760e514a951263c3f2440224ab997ebba1b56b0a8ce510d15c6959c17
154 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure, specifically pointing to 'traffmen.ru'. The embedded URL is presented in a context that suggests a lure for downloading a 'pokemon go mod apk', which is a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection further support the malicious nature of this file.

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://traffmen.ru/123?utm_term=latest+version+pokemon+go+mod+apk In PDF document text
    • https://static.s123-cdn-static.com/uploads/4421764/normal_5fe4c0613b651.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388412/normal_5fa032a3f1451.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403119/normal_5fd670d4ba7d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481408/normal_5fd0e3e98377b.pdfIn PDF document text
    • https://cdn.sqhk.co/sawowudin/ndChdge/xiligid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469645/normal_5fc091bb59a26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367625/normal_5f8a250c13adb.pdfIn PDF document text
    • https://cdn.sqhk.co/ladetozuxi/uichdJK/stickman_swing_hook_shooters.pdfIn PDF document text
    • https://cdn.sqhk.co/narulaloro/gjgd9ic/jitipafelavun.pdfIn PDF document text
    • https://cdn.sqhk.co/navolakolire/SegdhCj/my_little_princess_1995_full_movie.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/639307d7-2edc-4b2c-900c-e1c1eeab734e/mabarejupinawar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/383ed305-c2b7-4b5d-a305-ab37b6def7e8/jim_gallien_interview.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c91a9127-ca0a-4070-bcc3-133e430f2a65/31038489686.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0395eee-b6fb-473f-b5c3-0d0da6c54bf4/73446039331.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_off0000bc94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC94 5312 bytes
SHA-256: fb5d7e3a21be7e31c7af7f344187c789c5b6fe403f91af090aaf571a7fd23c25
font_01_sfnt_off0000ce9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE9A 9896 bytes
SHA-256: 5663987fdd448c143bf56155f63c36fc77ad25b3a612a795f0eab4200a514fc0

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