Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f6f5f376dda7f58…

MALICIOUS

PDF

42.4 KB Created: 2020-10-22 18:32:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-30
MD5: 93593fa093937121d001628a8dfd1b9a SHA-1: 1bd53dc8ad52abd8eed289be9c25319e4d37f546 SHA-256: 8f6f5f376dda7f58e304cbbec717073a8cd5e3b8ccabcf3b09de6f4abde25def
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://gettraff.ru/wb?keyword=automorphic%20forms%20and%20representations%20bump%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376609/normal_5f90da807be8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379859/normal_5f8eb2149a821.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380858/normal_5f8d17643bf74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376611/normal_5f8eb1093f0fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_5f8b924d82e55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f8890768862d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370266/normal_5f88513c7e9c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383679/normal_5f8ce9e64a1ad.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000653c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000653c.bin)
    • https://uploads.strikinglycdn.com/files/ce4fb41c-c61f-41b5-9ee1-1ee378c04375/79041818972.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9613937d-5ba5-4822-a140-2b8766ce86d3/43754346048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/4608/1957/files/55682447110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/3753/4619/files/focal_ps_165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7250/files/corrugated_steel_plate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/5772/4578/files/73945674621.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d87f0041-5948-4384-bf67-c8c7210a8c0d/78216467987.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6eda9c8e-7e16-4129-a911-911f8a6269cc/taboo_magazine.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_off0000653c.bin)

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000653c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653C 5492 bytes
SHA-256: 7d96fd526a3e499ac39825dfbddd4ead36ce762e395826678e9bcd873c87ba34
font_01_sfnt_off000077ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77BA 10616 bytes
SHA-256: 7aa489241b9b17029c14600572ee079bc0dc7c2e429318b31296c7550e749ecd

Open this report in the interactive analyzer, or submit your own file for analysis.