Malicious PDF — malware analysis report

Static analysis result for SHA-256 7263a6c5c0024122…

MALICIOUS

PDF

51.9 KB Created: 2020-10-01 04:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-11
MD5: 6755d6c7cf272b0aa6b1527d8d739909 SHA-1: 0d3128855fcef9cd7e0609f5c5b405b8c1bf36b0 SHA-256: 7263a6c5c00241228d68f7e582afcabfb2dfd870eb378a1cf35aad2aa00ef17b
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Travel-support phone-number stuffing scam high SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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=alienated+america+pdf In PDF document text
    • http://devedime.pesfusd.com/uploads/1/3/1/4/131482916/9602127.pdfIn PDF document text
    • http://files.trinitysecurityallies.com/uploads/1/3/1/1/131163890/9700cba789.pdfIn PDF document text
    • http://zalejev.shopgoldgray.com/uploads/1/3/1/8/131871781/1005203.pdfIn PDF document text
    • http://files.bgpentertainment.com/uploads/1/3/1/4/131407110/zosowel.pdfIn PDF document text
    • http://rezoxor.bensonbuffstreator.com/uploads/1/3/0/7/130776167/130727.pdfIn PDF document text
    • http://files.beradiantbyrebecca.com/uploads/1/3/1/4/131453674/defog-kozawaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008e0b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008e0b.bin)
    • https://uploads.strikinglycdn.com/files/ccece45a-b87a-40a3-bb21-a510589e8c1e/57237805893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b31a63d5-cd17-4ada-8fa5-20508de14cdb/vusafarupemowig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a41402f8-9d5b-4431-a233-a124380aead3/47281483282.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/472e4c4b-6e26-408a-97da-38b433c5217d/sifob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dd5339b-c739-49d0-8197-c9b9ed99e47e/98228437745.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_off00008e0b.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008e0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0B 5112 bytes
SHA-256: 191ce5e6ee5f9c174996e574b5c685484552c36b2b3901d36526f6716d92439d
font_01_sfnt_off00009f5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F5C 10352 bytes
SHA-256: 3bb0373b95f5ad816b80594e09052966e761d53e83e52a5ff9c0d5b5e78e8575