Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9a9f0830ffe3160…

MALICIOUS

PDF

56.1 KB Created: 2020-08-07 23:17:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 276e7ec934e0e81edf02fa58dd60468e SHA-1: cbedb02a1ea1880608c47e233eb01468802e5b9d SHA-256: e9a9f0830ffe31602ea57a4bdd597ce8dda026d1ecad9f6fd6f15e458fe2d6cc
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, appears to contain text related to a textbook search, suggesting a lure to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=atkins+and+depaula+physical+chemistry+9th+edition+pdf In PDF document text
    • http://files.mirandamusicalsociety.com.au/uploads/1/3/0/8/130874338/fedasozu.pdfIn PDF document text
    • http://lixapag.fear-less.co.nz/uploads/1/3/1/4/131407995/8480269.pdfIn PDF document text
    • http://files.dbssstingsoccer.com/uploads/1/3/0/8/130813645/wefokapikifelugajate.pdfIn PDF document text
    • http://files.be-the-space.org/uploads/1/3/0/8/130814126/9603365.pdfIn PDF document text
    • http://fofani.rebeccagrahamgallery.com/uploads/1/3/1/4/131408027/vulubuxib.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/1/0437/0199/3622/files/47906703805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/dagimomiperejijol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/nodakuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9423/7589/files/thirty_point_buck.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/4114337039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1918/9915/files/multiplication_and_division_of_fractions_worksheets_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/trane_thermostat_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/wegafutubovuzofigizemox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2154/1271/files/suzizakagudejuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/ritusobakidinajijavak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4954/1017/files/holy_cancer_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5978/1538/files/79704666955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4005/5208/files/lotunudewatowaveko.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 5

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_off00009a7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A7F 5704 bytes
SHA-256: 95680f7c56b75fb59f6755ebfd81a8ee7e1a4be577761cb364c1827fa5e267ab
font_01_sfnt_off0000adcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADCC 11420 bytes
SHA-256: 7ed257a7d2fab4b0ec75206636c439847bf554e162b364c13e55d1ff2a07f49a

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