Malicious PDF — malware analysis report

Static analysis result for SHA-256 12f2c75e23bdb41a…

MALICIOUS

PDF

70.3 KB Created: 2020-11-24 14:20:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d3afa2250f2c5a4c371f9d43a2cf9457 SHA-1: d396ade4ac7e87d50fe19dc25f5ca467b32bd280 SHA-256: 12f2c75e23bdb41ad6e12c53f92cbb45d14abefd12df9b756178a1c6665607c8
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://cctraff.ru/strik?utm_term=gt08+smart+watch+user+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382208/normal_5f8c46cc05e3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415934/normal_5fa44a5f23889.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444386/normal_5fbc9046c7463.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477155/normal_5fbb9ffb7ac5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f870e8148609.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368979/normal_5f9bd32540037.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460263/normal_5fb7e42f20e6b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/22855904922.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/22245873668.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/kiromuzomosaf.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC613 5220 bytes
SHA-256: 2fe5514a1e6ba5cbf2c5b579f8514623efd50079ac36b1104eb7055196fa6db3
font_01_sfnt_off0000d7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B7 11688 bytes
SHA-256: 80da44f9db07db0e542d77ff7b47615674b7374b7078d76cab3490dd147079dd
font_02_sfnt_off0000fe56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE56 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3