Malicious PDF — malware analysis report

Static analysis result for SHA-256 e733ccab5851f9dd…

MALICIOUS

PDF

36.8 KB Created: 2020-08-01 21:34:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 13925ed34f90b61e735ef6be048f3640 SHA-1: 7f1e78f5ac2002e26d5d188c4a2463355901c90f SHA-256: e733ccab5851f9dd8285dbd1f39e8de44e6799c60a31f48fe0754ec6cf6d6a80
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain, ttraff.com. This indicates a link farm or redirection tactic designed to lure users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the PDF structure itself is the delivery mechanism.

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=biostatistics+wayne+daniel+solutions+pdf In PDF document text
    • http://files.gregsautographs.com/uploads/1/3/2/8/132814147/396baf1.pdfIn PDF document text
    • http://files.universalhighways.com/uploads/1/3/1/1/131163859/wisebiguki_jebojure.pdfIn PDF document text
    • http://files.middleclassempowermentzone.org/uploads/1/3/1/1/131164260/4652949.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/1/0437/9013/9549/files/diniganu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3825/files/this_egg_feels_like_polished_stone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8855/9780/files/85170720266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/66222810611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6263/1326/files/bomaxijenotugifamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/72223502867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4460/8920/files/rorepufosigowasavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/lapikavewilaradojizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/81135585452.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E71 5296 bytes
SHA-256: 2164cf14a424120922f920b0c2ed7e6d46b068d1bd948cc35413d0e2ed8902be
font_01_sfnt_off000050a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50A8 9540 bytes
SHA-256: 3b8c759f67b02946ab1fa6f16346ac6739f01721117a8c26921de5571a0f83c3
font_02_sfnt_off0000712e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x712E 16152 bytes
SHA-256: 2289a8b0fb9c787484435e46cde90ac1dc3a58d460912fbd7a30f0e46b2b6819

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