Malicious PDF — malware analysis report

Static analysis result for SHA-256 c22f86c024861612…

MALICIOUS

PDF

39.8 KB Created: 2020-10-03 12:44:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 588095d75804a98df14dfb3a90bb5f42 SHA-1: 39f55b0097914b118455011cfa03d923f6c9f6bc SHA-256: c22f86c02486161288164e2fa4f8233347f8e5c6e3de49ac0f37e65e3f26fa0a
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/strik?keyword=insanity+flyff+crystal+upgrading+guide In PDF document text
    • http://wawogunat.darrellmatsumoto.com/uploads/1/3/1/0/131069759/gabijosovebin.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/de3edf61-33c2-402a-8337-749b775ab6d0/89634360800.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4a3a13d-861a-4d31-82c4-373e32088adf/28786448677.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7dbfc64-de11-4b66-944f-70fe26e2dd39/dijiguxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02f210b8-2907-4148-ab0d-f74604dedf24/resabimajuxekig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13ec297c-4c88-4bd5-a35d-1ab94ffce95f/boximiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9888/1704/files/xitemixuxino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0081/8593/files/47661114457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1128/2843/files/medieval_glasses_buy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9090/1144/files/lg_v10_manual_update.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7228/9942/files/gucci_outlet_store_palm_springs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2786/4993/files/60446550899.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_off00005beb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BEB 5364 bytes
SHA-256: 55c4b02f18a550973cde8246103faf4bc72a8d47249b1d4ed01abc97a4ea1d7f
font_01_sfnt_off00006e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E44 10540 bytes
SHA-256: e5e50e4b51b5c831761ac1794d1f2be7d6428b68bbb01bd95eda9d4e51ef0ed9