Malicious PDF — malware analysis report

Static analysis result for SHA-256 24d065fa55be19a3…

MALICIOUS

PDF

65.0 KB Created: 2020-11-21 00:14:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 348215b80ebfbb820d1062bccfc1d334 SHA-1: 3bae655a62ae1dfe0817ae4cba35cd6cd972d75e SHA-256: 24d065fa55be19a38ad5b4484db4bf120d5726a03ea8e5fa1d756b408d86e15d
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=son+of+the+mob+summary+chapter+10'. 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. No scripts were extracted, but the embedded URL is sufficient evidence of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=son+of+the+mob+summary+chapter+10 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370288/normal_5f8eaae21eaaf.pdfIn PDF document text
    • https://miremewokar.weebly.com/uploads/1/3/0/7/130738658/fenatokejijesov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477408/normal_5fb6922fbd412.pdfIn PDF document text
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/bb427ecff126227.pdfIn PDF document text
    • https://fijateri.weebly.com/uploads/1/3/4/3/134371572/9845991.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_5f9b9b17d68b5.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/lefemijip/harry_potter_hogwarts_mystery_hacked_ios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcde3e95-158d-4c0e-a9a3-7f956ab6d81d/dll_hacks_for_fortnite.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/anime_raws_tumblr_official_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7d9b736-3dc3-484a-a4b6-84d5458976d2/free_premium_account_generator.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_off0000c204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC204 5764 bytes
SHA-256: 4cb0fbeb0958fa52617ede8f797087639ea49d86814118ec2a54a1dab47c8594
font_01_sfnt_off0000d583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD583 9868 bytes
SHA-256: d07078dcd9297e1106336d20afeba7a60ffb4d4d3b6e0f917ed3718db20c45d0