Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f0af2749ed080c…

MALICIOUS

PDF

37.5 KB Created: 2020-11-01 21:42:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 41153a2c066c36f0f70aab5290c992ac SHA-1: 1da252d1f72f069111a16b4e3b65322ee3b561c4 SHA-256: e7f0af2749ed080c95153896693a3f604acde49e122a59eb732cca093da5907d
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://ttraff.ru/123?keyword=carquest+filter+cross+reference+guide, is the primary indicator of malicious intent. While no scripts were extracted, the PDF structure itself facilitates the redirection, suggesting a phishing or malware distribution lure.

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://ttraff.ru/123?keyword=carquest+filter+cross+reference+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404112/normal_5f99f5bd97993.pdfIn PDF document text
    • https://sobegivi.weebly.com/uploads/1/3/4/3/134311910/34c232.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f873e14a9055.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378171/normal_5f934e0a1d9a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444378/normal_5f9e9e5cb31b8.pdfIn PDF document text
    • https://bipinutafo.weebly.com/uploads/1/3/4/3/134358532/pinubim.pdfIn PDF document text
    • https://galuxenezinex.weebly.com/uploads/1/3/4/4/134437763/a214dc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_5f8906b2d0639.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/38074457-0c65-44e2-84b1-d4c06a4a3e0d/faruk_k_azar_azar_mp3_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f370af2c-fe6d-4aeb-a4da-f6dde90955ba/gigujuke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1acb2d0-33f5-4f3d-8fe0-e622eb3f22c9/5002178655.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_off00005361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5361 5220 bytes
SHA-256: 135780356b156b6b8273e0e9a7b37a10499ac7e1d251db7b37943d87250ab635
font_01_sfnt_off00006521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6521 10832 bytes
SHA-256: 29b714a9f11fefb3867bc1975fa28c03d71ce04bc06ec1da7a5a5d239910dcc3