Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b4e2d2aca9000d9…

MALICIOUS

PDF

52.2 KB Created: 2020-08-08 14:29:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 495f92d600cf68f3eb946001c41b39dd SHA-1: ee1ed3620e1b1fa1fb4daf268205e9ba80c2d56f SHA-256: 8b4e2d2aca9000d93e3ab70828f1a9956e78c76094e02dea445ca69af8b81834
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used to redirect users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.com), and another flagged a large number of external PDF links, suggesting a link farm. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=genetic+disorders+diseases+pdf, which is likely intended to lure the user into clicking on it.

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/pify?keyword=genetic+disorders+diseases+pdf In PDF document text
    • http://files.moredoorclassics.com/uploads/1/3/1/4/131453188/4191449.pdfIn PDF document text
    • http://dukipon.k9justincase.com/uploads/1/3/0/8/130814328/bukakamowif-sezaxupugopak.pdfIn PDF document text
    • http://files.globalevangelisticministries.net/uploads/1/3/1/3/131381658/bobivil-vidawoz.pdfIn PDF document text
    • http://files.beeston-counselling-and-professional-development-network.com/uploads/1/3/1/4/131406605/1903623.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/1/0440/0336/0926/files/english_to_english_dictionary_file_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1786/9211/files/gifosovelafusexavew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/64559101732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/access_database_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4045/6360/files/83237733537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0349/4043/files/24950552245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/4407540765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3886/6593/files/sokobugepukikaludavulezev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9221/3911/files/esl_classroom_objects.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9970/7810/files/regejizefinopagupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/kividitadup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3488/5792/files/78610614792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/xudobam.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_off00008dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DAC 5148 bytes
SHA-256: c2c0820a36405dc4806b79328e6df7542a72696078263a4e5f56adb63cfa1f2d
font_01_sfnt_off00009f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F41 10608 bytes
SHA-256: 669d3261c5c985d95f2ea79747b9bf2af6ae7db7584044a361cd164aa716b3ea

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