Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2412bbcc2963a36…

MALICIOUS

PDF

40.4 KB Created: 2020-08-08 09:15:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5696b90c9c8e65764f445838ff49d0d9 SHA-1: 6b80bc9294e0688ebb60dad2cf33d6af99d89b68 SHA-256: c2412bbcc2963a360892c37ebdbe55df0d984dd0e4414737be8f845fb0f4b669
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=connected+mathematics+grade+7+pdf', which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, also contains this URL and other Shopify-hosted PDF links, suggesting a link farm or SEO poisoning tactic to lure users to malicious content.

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=connected+mathematics+grade+7+pdf In PDF document text
    • http://tuxuwut.gallery-ww.com/uploads/1/3/2/6/132682883/279364.pdfIn PDF document text
    • http://funafum.the-authorscorner.net/uploads/1/3/0/7/130776433/8817193.pdfIn PDF document text
    • http://files.priestlysalvage.ca/uploads/1/3/0/7/130775220/c7ac1ad82c.pdfIn PDF document text
    • http://files.riveroflifergv.org/uploads/1/3/1/8/131856108/7956406.pdfIn PDF document text
    • http://files.cfnaturalhealth.com/uploads/1/3/1/1/131163643/2829028.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/1/0427/3229/0215/files/812087529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/kotor_2_personal_crystal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/99291065898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/14049041434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9461/4940/files/www_hp_com_support_colorljmfpm277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0098/6787/files/haynes_holley_carburetor_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17524121831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8244/0103/files/92174834737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/79053343061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/mathematical_formulas_in_excel.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 6

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_off00006160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6160 5524 bytes
SHA-256: 40e8b59f3275618a461c531211e4943b7a9099ebbf2c3c084512453caee3577f
font_01_sfnt_off000073ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73FF 9624 bytes
SHA-256: 0b20021e28c0c85094d97a6efe7f3934665e3a79cfd89d4f81c947f64e085162

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