Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d1f208ec235733e…

MALICIOUS

PDF

86.9 KB Created: 2020-11-26 04:21:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1daefc7ac260cafb5f20fa3d08d01bdb SHA-1: 5c766adc9a436143983590168c40fb6c85683f68 SHA-256: 7d1f208ec235733e8b0612186213bca75e3eaf2cf53024799055f59d8ed03e00
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/123?utm_term=gold+rush+gaming+owner". This URL is likely used to redirect the user to a phishing or malware distribution site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL in a PDF document suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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=gold+rush+gaming+owner In PDF document text
    • https://cdn-cms.f-static.net/uploads/4392457/normal_5fb9d88343df6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426572/normal_5f9b14e21b44c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428062/normal_5fa88ee97ab0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409409/normal_5fbde49b730af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383798/normal_5f9b78d634a3f.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/879ad21b-be55-4792-940c-754d16b3309e/directv_code_775_and_771.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b660ba9b-70d8-4997-b6ba-58ca4f08a014/81617461046.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/first_aid_leveling_guide_vanilla_wow.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/63161039450.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/ganezokotobu.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/trials_frontier_cheat_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab5a85d4-b86b-48d3-b1c8-a6742849c601/corporate_identity_mockup_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/723defa2-e5f3-4743-a6ef-a572ef5ff366/30266994656.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/paxiwiguji.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/agreement_of_sale_template_car.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_off00011201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11201 5360 bytes
SHA-256: 18501fa33f80641abbeb9dc2db7a9b38a2010d63e01b81f2aaf40e9c8f929f7d
font_01_sfnt_off0001241f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1241F 13476 bytes
SHA-256: d9f60517cf531033782a34abbdbf0daf88b3821df1f13e5373733b1584907d52

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