Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0a34a02f93cf20f…

MALICIOUS

PDF

44.4 KB Created: 2020-08-14 06:02:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4597ff970759983688a572fd87edc91 SHA-1: e670a56288362447c7b4dc273020c766d3d6ed40 SHA-256: b0a34a02f93cf20f157ae48e9077c59d24d291ab720f06a1e9d93d46f6a50096
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external websites. One of these links, 'https://ttraff.ru/pify?keyword=boolean+algebra+laws+proof+pdf', is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and appears to be a lure, possibly related to academic content, to encourage users to click on the malicious links.

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=boolean+algebra+laws+proof+pdf In PDF document text
    • http://files.jenningssheffield.com/uploads/1/3/1/4/131413766/jupixezof-bafusurim-vuxuvew.pdfIn PDF document text
    • http://files.bearcattheatre.org/uploads/1/3/0/7/130739116/5fe99868e.pdfIn PDF document text
    • http://bogewop.treehuggersoap.com/uploads/1/3/2/3/132303382/bdb0bc891a2.pdfIn PDF document text
    • http://files.doubleadobeschool.org/uploads/1/3/0/7/130739918/1347475.pdfIn PDF document text
    • http://files.digivationsxgens.org/uploads/1/3/1/0/131070604/jubopepukuzodeduzo.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/1/0433/9027/1642/files/95108936521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/75781588978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/mogulixatevezixuxotopiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9445/0078/files/16089449687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2484/2906/files/30916187472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5318/7223/files/munchkin_tabletop_simulator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1284/8790/files/pirabogazomuzokatelukojan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3477/9553/files/arduino_uno_45_projects_for_beginners_and_experts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1251/1128/files/ruvabuxirakixakibaxire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7804/8162/files/zanebopovuxakeketati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1195/5098/files/vizepujidarawotutedagatib.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_off0000710b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x710B 5492 bytes
SHA-256: dee5d0c1a9351d2e1129a73891b3657495010e0e3afbf79f609757f6490388d8
font_01_sfnt_off000083cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CF 9640 bytes
SHA-256: 09880235fa942e06a9edb19517bd2a77aaf5363217cfbf413966ef181339d36b

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