Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee68b4d7f6c3630…

MALICIOUS

PDF

40.9 KB Created: 2020-11-02 15:23:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 9cf8e21a11fc9e6e2d7e8107b04a7237 SHA-1: 51556d5c9112c55be941d2cce9dc1dbc865cc86f SHA-256: eee68b4d7f6c36305926be18a4e75168bbf2bc70315cedc1a2a4a9aa08216dcf
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://ggtraff.ru/strik?keyword=clone+hero+guitar+hero+3+charts' is the primary indicator of this malicious redirection. While no scripts were extracted, the PDF structure and the malicious link strongly suggest an attempt to lure the user to a harmful site.

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://ggtraff.ru/strik?keyword=clone+hero+guitar+hero+3+charts In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381543/normal_5f8d7cec5ec4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f871bcd7df89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424037/normal_5f9c65d4b4bcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388841/normal_5f9497d8d79fa.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/060a70c8-89c0-4546-bed0-b27c5d224bcf/biblia_hebrea_peshitta_en_espaC3B1ol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5836/3048/files/dream_league_soccer_2017_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8486/4415/files/mazda_3_sport_2020_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7973/9813/files/linear_algebra_and_matrix_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fdf05e6-f025-4359-9754-ce1713054e2e/rekolav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e384f248-4a6e-47b8-a4f3-adab29b1bbbe/27969266506.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/xagijowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3557ba0-ff0c-4368-89eb-70c838e4c591/40335402866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2012/5079/files/145931071.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_off00005fbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBC 5128 bytes
SHA-256: 206502087d3cc27e2f85875f4de4cc5764a7d0a25248ba6622c9badacd1e49e0
font_01_sfnt_off00007122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7122 11372 bytes
SHA-256: e32fd558e8c854506349076502899b3f782d05703318793085aaf263c3803cbb