Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc3ec3ff3726207a…

MALICIOUS

PDF

40.9 KB Created: 2020-11-05 02:05:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 8dd4ad6ca4a7696a0d01fdaf7bc263ae SHA-1: 24b69902dbbe3e594940008c55448fda2d8a7b5f SHA-256: fc3ec3ff3726207ab282645c5337274c44c1f62098d9445283d2ff7ac94a635c
94 Risk Score
Tags
free-cdn-ebook-manual-lure

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/aws?keyword=the+storm+kate+chopin+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4391599/normal_5f90a51a5bb05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413712/normal_5f96ce5494a85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408858/normal_5f997491b5f23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373508/normal_5f9ae11430bcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369163/normal_5fa1c00fb1ea1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423772/normal_5f9b53eb62f72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378381/normal_5f8fabdcc223e.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/4a1a89d7-e360-4427-a52c-1119e9503266/xepedelovomewu.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/kukezu.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/coding_audit_policy_and_procedure_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbced918-8ad2-407b-ae61-c4eff93f19f6/barbie_christmas_carol_full_movie_in.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/big_lots_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/44363717271.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2a3b0cb-ea8b-48f1-98be-1cabc35009d3/litavirixowonoja.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_off00006393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6393 5376 bytes
SHA-256: baf90904b74381dbaebb1b6d5d1f803fd14a701cd4a70828030b4a39d1bb20d9
font_01_sfnt_off000075ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AB 9792 bytes
SHA-256: e945aaa0a3e170f7ac9fa881d3f4e640fdd2847baa6595930ba81b3b8dadbdae

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