Malicious PDF — malware analysis report

Static analysis result for SHA-256 333d2d312f772c23…

MALICIOUS

PDF

42.9 KB Created: 2020-08-10 01:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cfdf96ac31d0ce7d1ea30c288592d315 SHA-1: a5e4af96066cb2a99cc82fc429516d5f1506b467 SHA-256: 333d2d312f772c2348ca7a77ea72926c476cfaeee044bcfffe7f1b7dd9ad2359
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to appear as search results for a book, redirecting users to a malicious URL (https://ttraff.ru/pify?keyword=applied+behavior+analysis+2nd+edition+pdf+free). This URL is identified as a malicious redirector and part of an SEO link farm, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=applied+behavior+analysis+2nd+edition+pdf+free In PDF document text
    • http://files.tlccabinetry.com/uploads/1/3/1/3/131380292/vemozokedepewuw.pdfIn PDF document text
    • http://files.ellenaltjudaic.com/uploads/1/3/0/9/130969389/bojulowudore.pdfIn PDF document text
    • http://roxubuf.communityofchristiancreatives.com/uploads/1/3/1/3/131384635/7041931.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/1/0435/1403/6376/files/57796701147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/pajotamikegibowodosaralop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/17431636430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/muxolalinurijelibabozafod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5817/3854/files/xitilumixigafeterara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/takadujuzirakomowefuwufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6142/5814/files/multivariable_calculus_thomas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3174/0066/files/lurixilinog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/jadavuzetazepiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/pojitedaligebuvu.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 3

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_off000067b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B7 5552 bytes
SHA-256: 1d1d4c51d27eb77e638acd2e28ecdde2fd295bd30363b83b9a8be28a249c779d
font_01_sfnt_off00007a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A99 10664 bytes
SHA-256: 3595953f32c402ab5cf1ac1b0a934a20de495724d4194e3d374a6ff62d156c1d

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