Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f40b45fa7efd9cc…

MALICIOUS

PDF

36.7 KB Created: 2020-08-12 13:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a76f57a86bf131c6f527d84634032e1c SHA-1: 10660fbfec4da25831f633d84e661a746f0847ec SHA-256: 3f40b45fa7efd9cc7955cfccd002c6f90e63a4bc8e3658ffdc7ad879f9b2bb81
194 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is https://ttraff.com/wb?keyword=psycho%20cybernetics%202000%20pdf. While the document body contains text related to 'Psycho cybernetics 2000 pdf', the embedded links suggest a broader SEO poisoning or malware distribution campaign rather than a specific document lure.

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://ttraff.com/wb?keyword=psycho%20cybernetics%202000%20pdf In PDF document text
    • http://files.freedivingcompetition.com/uploads/1/3/1/4/131453036/fugisaxotokisabanak.pdfIn PDF document text
    • http://files.darlingyoga.com/uploads/1/3/1/4/131453007/vijutu.pdfIn PDF document text
    • http://files.mybutlershop.com/uploads/1/3/1/6/131636862/bokume.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/1/0431/3595/9191/files/how_to_get_free_robux_with_inspect.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/duvuwatew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/71966728558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/rise_of_nationalism_in_europe_class_10_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1739/5614/files/sidegize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8868/2915/files/961900536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pinabazebovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2741/2645/files/absceso_periapical_y_periodontal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3512/3102/files/punidajutemokobejupadujev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4775/3640/files/veduvusivuxemabegivuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1869/4305/files/55582638854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7269/8006/files/e2_80_9chors_piste_e2_80_9d.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 4

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_off00004f91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F91 5516 bytes
SHA-256: 024f715e68675545a73a7dc1a6f7c42bda936809d1fb84e3d4e9149139152b2b
font_01_sfnt_off0000624e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624E 10560 bytes
SHA-256: 4092638860cded3857c9bd50ab6e09d315c03342d6de6360022ce6019d339d5f

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