Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee31ca6c16a1465e…

MALICIOUS

PDF

54.3 KB Created: 2020-08-11 01:57:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26859941277ea613277a692978d17b62 SHA-1: a5374cb00d38de1f5e48be65ccacd590eb7ca0d8 SHA-256: ee31ca6c16a1465e6a0a042968329791429bcfd6323c7e9c38c9e82431e9faa2
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as an exam reviewer. The document body and heuristics indicate a large number of embedded links, many pointing to benign Shopify domains, likely part of a link farm to improve search engine ranking for malicious content. The primary malicious URL is https://ttraff.cc/wb?keyword=let%20exam%20reviewer%20pdf%202019, which serves as the initial lure.

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/wb?keyword=let%20exam%20reviewer%20pdf%202019 In PDF document text
    • http://files.gleisinc.com/uploads/1/3/1/6/131637482/jenoda.pdfIn PDF document text
    • http://files.myfavoritehaunting.com/uploads/1/3/0/9/130969775/3425145.pdfIn PDF document text
    • http://files.straightedgewindowtinting.com/uploads/1/3/1/8/131857916/99f34dd6.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/1/0431/4421/6730/files/a_companion_to_forensic_anthropology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/zanogaguzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1185/8855/files/embroidery_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0532/0088/files/66796114082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4529/6027/files/fakepawevuwodexizetusirok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62374455636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/42686534594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0601/7186/files/jotupipiwasajubufemorebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3287/0044/files/apache_commons_cli_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6295/1062/files/quicken_2015_manual.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 4

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_off00009156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9156 5620 bytes
SHA-256: 94f367e576e5b81b43cff9d021e527ea7e80e57e04bd943994e01a9132b707cc
font_01_sfnt_off0000a484.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA484 12416 bytes
SHA-256: b44e39a6749f047a37708d95749ac68beeb3e6a3afa4e4310ebdc9b083f5fc1c

Open this report in the interactive analyzer, or submit your own file for analysis.