Malicious PDF — malware analysis report

Static analysis result for SHA-256 a74ba29d16095662…

MALICIOUS

PDF

47.3 KB Created: 2020-10-26 02:31:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-28
MD5: 59bd79a013ece9e8ac83734c0442944c SHA-1: 06dce38cce0cae0072888904426beee7273856a0 SHA-256: a74ba29d160956624c3761c8ebd1c700ff10436a80947c6695a5965714fcec6f
94 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://cctraff.ru/123?keyword=vegas+gangster+crime+city+mod+apk', is presented within the document body and appears to be a lure for downloading a game modification. While no scripts were extracted, the presence of a malicious redirector URL strongly suggests an attempt to deliver a secondary payload or lead the user to a phishing 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://cctraff.ru/123?keyword=vegas+gangster+crime+city+mod+apk In PDF document text
    • https://zitidatuviwe.weebly.com/uploads/1/3/4/4/134493200/e4dd0c550c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367005/normal_5f874ef2a1db0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377109/normal_5f8a0676bc8f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f87432a619de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367304/normal_5f888d3376b2a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9129/8978/files/46647031922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/6539/3319/files/mayfair_guide_apk_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3996/3325/files/16516759217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/7721/4884/files/what_is_a_personal_response_paragraph.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da46f876-b830-47c5-a3c9-7175d5c4fdab/38782712418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96565d83-d9c7-4b5f-8bb9-b894d7c7ce5b/vidilizefonorinegojexowe.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/22296643413.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/52096648850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7787/0786/files/nivokisakevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4460/0491/files/keyence_hr-101_manual.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AF 5492 bytes
SHA-256: 99290937e10ce60ffe2c1c4fd61756fb1e4f00dddea29bdbfbabf8e8116a7b8d
font_01_sfnt_off00007453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7453 11516 bytes
SHA-256: 9240e1499c11e163a16885a76480a4ce65f1c5e2930b74a82003d542d4c9322f
font_02_sfnt_off00009ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC0 16084 bytes
SHA-256: e5245523bd71a78e06ca3300da63f55ad096e28dd8c1a5e83e138be64f7d0aee

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