Malicious PDF — malware analysis report

Static analysis result for SHA-256 f40278366a451c75…

MALICIOUS

PDF

44.1 KB Created: 2020-08-17 03:25:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f90808f0381ad6ac0a0b39a56db291f SHA-1: cc3312e2eab14e6130a56d6e35f8519bbeec9817 SHA-256: f40278366a451c753f6515d606319a7806c56bfa081efce7d95166c9441056ac
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body and embedded links attempt to lure the user into downloading a driver by directing them to a malicious URL. The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious content.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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://ttraff.cc/pify?keyword=bluetooth+driver++windows+8+64+bit In PDF document text
    • http://janoni.campcosmo.com/uploads/1/3/1/4/131453858/nezukodutojunin.pdfIn PDF document text
    • http://files.drkentpsyd.com/uploads/1/3/0/7/130775033/jonuxejoviral.pdfIn PDF document text
    • http://files.hoggiesnetball.com.au/uploads/1/3/1/0/131070500/5151331.pdfIn PDF document text
    • http://files.shopvarietyislife.com/uploads/1/3/2/7/132740871/datajenufedap-digezez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1903/2987/files/64470968018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0006/9285/files/administration_publique.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2154/1277/files/the_ritual_magic_manual_david_griffin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6114/9850/files/tiwivawir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/johnson_outboard_serial_number_lookup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2543/1709/files/28171980011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6756/8291/files/java_projects_with_source_code_in_netbeans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3510/6200/files/militanikogekoga.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

Related samples 8

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_off00006962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6962 5480 bytes
SHA-256: 3221e31dfd1eb2fbd55bd311f525ca18c236c9e5c3e09adcfc0923206d596167
font_01_sfnt_off00007c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1B 12344 bytes
SHA-256: 377e0d888fdae32ee9b45717c879a6b0b59a998beea3dc041df2b4156e56e8b5

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