Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e39b5a15ea085b0…

MALICIOUS

PDF

38.8 KB Created: 2020-11-07 10:25:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a9bb15b19b542288f4b9b9887a5abbe6 SHA-1: 10c02e13fc1553c4a22e8986f79b047bc94e3def SHA-256: 6e39b5a15ea085b0c5671c230d16faff327cf524b6d32f25009be38be5a1e414
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by 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 1.0000

Heuristics 3

  • 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?keyword=wirehaired+pointing+griffon+rescue+colorado In PDF document text
    • https://kikuvabafot.weebly.com/uploads/1/3/4/3/134332304/18575c86e1.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/ad83b4228.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392457/normal_5fa3d81810f0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372373/normal_5f9c96fa0e934.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374371/normal_5f973ab757455.pdfIn PDF document text
    • https://duvupobilalef.weebly.com/uploads/1/3/4/6/134630448/duxaperipimodisebag.pdfIn PDF document text
    • https://xigolomo.weebly.com/uploads/1/3/4/4/134483438/9070348.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/ce3d327a-515f-474e-ab82-a9840e6f4e5e/acid_base_properties_of_salts_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42422e79-1ab4-4997-ba0f-e6a93dff8b7e/38408147381.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acfcc316-c988-4a78-a382-15495c0e48f7/8534345620.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/le_reve_skin_care_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3e933f4-b3b0-4833-b1bd-f220ed8f5d82/kavaridowanivagen.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_off000056d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56D9 5432 bytes
SHA-256: 5364ac1e854277b6fefb5f0a3ed9860c38b20e979b18b66a3579050e53cd7104
font_01_sfnt_off00006962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6962 11048 bytes
SHA-256: d59e3e8c7fc0aed03057ff49d56c9553fe0e257d98d88fb06e275970c536746c