Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4abce2dd7106106…

MALICIOUS

PDF

41.9 KB Created: 2020-10-31 21:56:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: eba2a5daed53997d34ffca915ed266bf SHA-1: 2f6af92ab51e41a7119255ca14317c3f0badb2b7 SHA-256: d4abce2dd710610631e4f800c227ef3491efcd56852008d2bbc53ffb248e92a8
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://ttraff.ru/pify?keyword=korea+town+cook+book In PDF document text
    • https://vilomaranetuxer.weebly.com/uploads/1/3/4/5/134502128/pezil.pdfIn PDF document text
    • https://jikiwifapa.weebly.com/uploads/1/3/4/3/134338998/ca09aec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/mimuniwulugawoteva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6950/5187/files/repired.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e2d1106-8565-49cf-b50c-77dbbad1f1fe/safety_1st_all_in_one_convertible_car_seat_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/township_game_tips_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c552885e-fdbb-4cc6-acd3-936cdfd50991/rovamabubokawagopab.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/27315029182.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c2f5b8c-6a63-466d-ab91-bee511314c06/sevinuxitovimipodetemu.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_off00006583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6583 4848 bytes
SHA-256: fc106c55342c8555b98f9ee9d6a90af2e14dacb6d58fe99d6c065290529953db
font_01_sfnt_off00007623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7623 10992 bytes
SHA-256: b3e1ad6a8bd5943323d2451304f34bb19acb801582b6944ad317baf3194710ff

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