Malicious PDF — malware analysis report

Static analysis result for SHA-256 0464805372d0a8d2…

MALICIOUS

PDF

59.4 KB Created: 2020-11-04 07:36:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 583cd4ed559b6047910146ac4500ef19 SHA-1: 9cff3eecb9fba5ebcde45b32f51a26260518e9da SHA-256: 0464805372d0a8d2975b35d806ed70be3d64bd537925e11fc5e233fcdf92680a
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?keyword=watch+movies+free+online+4k'. The document body, though heavily obfuscated, contains text related to watching movies online, likely a lure to encourage clicking the malicious link. No scripts were extracted, but the presence of a malicious redirector suggests an attempt to deliver a second-stage payload.

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://gettraff.ru/aws?keyword=watch+movies+free+online+4k In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f871207889f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382629/normal_5f9c5f39dcfe3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f873e5fd17f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418001/normal_5f96fe2fcae66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403816/normal_5f9c4a5811dd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366374/normal_5f875667889f9.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://uploads.strikinglycdn.com/files/a6faf2bb-fd13-400e-a20a-75c8f8823efc/license_plate_template_star.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/137b33cd-5985-4e66-8dc9-2fa1d99d80e5/99540237327.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3e739fb-30c5-42da-ac5e-50ed37bc66e9/xitemilunin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74a893ff-75af-4e0b-9dfa-1bb747df081e/fepujubuzadujuze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f04864c-88e8-41e3-b73d-94ac07c6846c/89429976721.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/ib_hl_biology_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95bb22f7-a765-4a39-8b7b-ca216636113d/niresokejimijojew.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_off00009d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D3F 5132 bytes
SHA-256: c92b93d9179f83ecde203789bcf2338e70d5d253d2f932d42dc3a841b6c9710e
font_01_sfnt_off0000ae98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE98 10520 bytes
SHA-256: ec195e583188d23325e10a261a5b3f746624d9823f0c5bf208c74d6bfee68a9d
font_02_sfnt_off0000d2a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A1 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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