Malicious PDF — malware analysis report

Static analysis result for SHA-256 2141c346d13a4acd…

MALICIOUS

PDF

41.3 KB Created: 2020-08-13 21:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e0af47506f1d2a29a866b9d15c3361f5 SHA-1: f9f44966546c7d718f9f679cba8fcd77f8a2fed5 SHA-256: 2141c346d13a4acdfdf1f76d05c5af82ffb262c6a7468b95f30e14e7f667c002
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to the 'UEFA Champions League app', suggesting a lure. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm or distribution mechanism. The ML classifier also strongly flagged this PDF as malicious.

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=uefa+champions+league++app In PDF document text
    • http://files.selalab.org/uploads/1/3/1/4/131453111/sowalove.pdfIn PDF document text
    • http://xiruv.merilynmerisalu.com/uploads/1/3/0/8/130813765/8851205.pdfIn PDF document text
    • http://files.ignitecities.com/uploads/1/3/1/0/131070152/aa60f3.pdfIn PDF document text
    • http://files.seishinkan-iaido.com/uploads/1/3/2/7/132712093/papowepurofir.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/1/0433/0687/7080/files/27622062760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/13622336508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7234/8579/files/4479000158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/14389724082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3399/2085/files/5970242413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5136/9127/files/goselo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4976/9367/files/the_botanical_hand_lettering_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5382/4677/files/53381817980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/libro_de_agrippina_vaganova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1152/2209/files/jizum.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 7

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_off00006243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6243 5324 bytes
SHA-256: 8d0650b6f9908303fcee0c379b51352db0ea05e6c2277c10065d41156155d806
font_01_sfnt_off00007444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7444 11052 bytes
SHA-256: f1d69f8d75bcc0297173cc4d63a8a10d1534806b25da6e60f146ebe12b48d21c

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