Malicious PDF — malware analysis report

Static analysis result for SHA-256 44589d28ad0cf2e0…

MALICIOUS

PDF

36.9 KB Created: 2020-10-31 08:20:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-07
MD5: 8428a94d2d2d63d3a7a0039e112baf54 SHA-1: 0d41875b08a189e03848a130c77662def3d1b72a SHA-256: 44589d28ad0cf2e01ef831867508645c2b9c7e28e304e05be769abb2394887d9
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://cctraff.ru/strik?keyword=where+to+get+poison+arrows+dark+souls In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373261/normal_5f8c8422e806f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366639/normal_5f893a89c90d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368985/normal_5f889c9fd372e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390681/normal_5f962766682e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391302/normal_5f91485765b77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374013/normal_5f8b82b4c89c7.pdfIn PDF document text
    • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/duzuroguva_jelawiguk_badolale_menivonalagaj.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/novipaliwid/mc_delta_t_water.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/bugejujebi.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/39733432993.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/77454088161.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/67925426615.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/helicobacter_pylori_tratamiento_colombia.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/panasonic_sound_bar_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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F40 5392 bytes
SHA-256: 9d4038283ae4dd07d19bd74a7cb0dd31e4f4cf7c08acb9aea070a54185636d32
font_01_sfnt_off000061af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AF 10992 bytes
SHA-256: 0137533ed7a302baa9e10f72a0efc23e30f61ced3b12b5cc01dce673567e30a8