Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea63f530d42862e9…

MALICIOUS

PDF

41.8 KB Created: 2020-11-01 16:26:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: b55ed178f6330399690befeb5dfb657f SHA-1: de62286079d9019b55e3aabf54d5746875685e33 SHA-256: ea63f530d42862e97641d3c3a2ab66d57f1b2d030d8810d30bb1d81263be51d2
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://cctraff.ru/strik?keyword=eso+pricing+guide+for+xbox In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f875b5a7d12f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403960/normal_5f9326dd2d270.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/29dd1449-1524-47d7-9d38-b9ef0074092e/47001373426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3104b60d-a429-49e6-976f-6efffacc8295/tixubixegabulowux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95edb672-7b8d-430b-b061-60385ae07b42/just_ella.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/597e3e5e-9692-4683-9ed9-eb32f519aa6c/atmosphere_worksheet_ks3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5978175-1233-48bb-987c-cbf6a45a8821/annalee_dolls_price_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bacb2317-f5e5-421a-859c-94b06d1a4a0d/99199378495.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f2881f5-3069-4ce0-88b5-648444177c4f/93727113601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d374686d-d555-4a5c-a7af-6f228083cfa7/wimonifedosuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfb72c2e-f279-4537-868d-473a3bf38105/xopetateduwevudosuvu.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_off00006531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6531 5244 bytes
SHA-256: ca49604ea419b15698ec38879bad789cb425bf6cbf3f7243dc40feb764bb7cf3
font_01_sfnt_off0000771c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x771C 10592 bytes
SHA-256: 1a3f43799ec42ed50f0e98e8d96871750f4b5332e851e7fd0314cb96b4e0aea1