Malicious PDF — malware analysis report

Static analysis result for SHA-256 949724f42f33403e…

MALICIOUS

PDF

41.9 KB Created: 2020-10-31 20:01:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-11
MD5: 2d75775d73c75bc3e21eafd5215404b2 SHA-1: 3511fcc3030c7c5b9c2a3ccf487104801ada53d6 SHA-256: 949724f42f33403e90de01dc7ceb8de0526c6b0691038bbdb953086fac9d7554
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/wb?keyword=poppet%20valve%20design%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_5f91c40cb89aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373999/normal_5f977ca0ae8a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379034/normal_5f8ba602023e8.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/42191813107.pdfIn PDF document text
    • https://wuwejinetuna.weebly.com/uploads/1/3/2/6/132681176/godebavovotox_sijogewupa_mitino_mujar.pdfIn PDF document text
    • https://vobemebu.weebly.com/uploads/1/3/4/3/134383317/675bbb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369505/normal_5f88a8713d61a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_5f8d831de66d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415321/normal_5f9b1f2473269.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/nekalakagajabefemajugerov.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000593a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000593a.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00008d15.bin)
    • https://uploads.strikinglycdn.com/files/c970ec04-dfb7-4769-b96d-3c837edc294a/fazexubotizapopofifik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d4c8741-350b-47ab-ab4c-614a2165fe13/kiwugedes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae4ac496-112e-4e8c-88e8-9fdd0145e266/never_an_outbreak_by_william_fharel.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 extracted file (font_00_sfnt_off0000593a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000593a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x593A 4964 bytes
SHA-256: 51c4c01e8c847c75da611a0ae870905ab288a4f546806a40197137639c6f8734
font_01_sfnt_off00006a33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A33 10172 bytes
SHA-256: c51b53806ed475e0edd11bc6844caa8436aecce6efc2d224b2a88bae594404a6
font_02_sfnt_off00008d15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D15 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378