Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0c70fa366d1cdd2…

MALICIOUS

PDF

78.7 KB Created: 2020-12-27 15:51:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 341bf50bc9baca043951a008f9d9609b SHA-1: 97de81d04340ed431dae7fb16d7ffc7043375256 SHA-256: d0c70fa366d1cdd26d4f0214cadbcc8c4eadb3258e5eaf1d59844354413fc958
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/strik?utm_term=city+car+driving+simulator+3+game'. This URL is likely used to phish credentials or deliver further malware. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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/strik?utm_term=city+car+driving+simulator+3+game In PDF document text
    • https://cdn.sqhk.co/dodirorip/agfKNLQ/55913180563.pdfIn PDF document text
    • https://cdn.sqhk.co/buweworipoza/cBfhcha/banco_do_brasil_in_new_york.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417122/normal_5fcf679f2f246.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/zikeko/38410975555.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43f4c132-ac7a-4100-b64c-714fbdd03f5b/pinavawekebegok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0866d21c-142f-4366-aa0c-df7048c06904/bivafeposaxotiwige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83e9ad05-0aac-4af9-83e0-d095cb8f29a0/suvatowanikewadowis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24f0e9ad-0556-40e1-afba-5bb3dba548f7/totem_stickers_ultra_moon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffc503fb-354f-4c99-b204-d18fc5ba8f5b/kudisikatutipakurunemexe.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_off0000f4d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D7 5492 bytes
SHA-256: 09834916000fe91e295135051ea50badc0f5e097fa437758e2a4b90d44254e75
font_01_sfnt_off0001077b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077B 11352 bytes
SHA-256: 81afba4ae5b460efb7069210236ec0ffc6a795b89666097a9fdf615ec1a3d0c7