Malicious PDF — malware analysis report

Static analysis result for SHA-256 401204888a695a7a…

MALICIOUS

PDF

40.0 KB Created: 2020-08-25 07:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fe06ab3df9a9ea6a25c168130c668fd SHA-1: 8d6e59340c7001bc4ec4518b7c0be99a5ac54855 SHA-256: 401204888a695a7a51b05def7dac33d0f4bfe45183b7e88a9de82ad2fd8a625a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or content distribution strategy. The primary attack pattern involves tricking the user into visiting the malicious redirector.

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=letter+cutting+guidelines In PDF document text
    • http://files.lakegenevapsychologist.com/uploads/1/3/1/6/131636692/notebisameku.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/1/0427/9628/6111/files/91369143454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1819/6891/files/latin_english_dictionary_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4202/8190/files/mevojiboda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/nexejubamowebug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0691/0887/files/fuposij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/wupakimiwudorisiripop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3015/0296/files/84933262423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4385/6279/files/balanced_diet_information_ks2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/70172724350.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 1

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_off0000605b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x605B 4840 bytes
SHA-256: fb56de6207a6a1ad771b98779fe8cfc8a480b56db6c04704be5749309c65547a
font_01_sfnt_off000070e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E1 10192 bytes
SHA-256: ba823619c368a69a0aa2dfe633330ddcda6f741d2086e9362b55e9e7636cbeea

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