Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfe964c4e18d1a2c…

MALICIOUS

PDF

45.9 KB Created: 2020-08-09 12:21:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be8f721549721cae62c7bd064d9266cb SHA-1: 72acd66fd76e3f5173ffc53c7815c273387b6dff SHA-256: cfe964c4e18d1a2c4d21cc019b7860ab476ff7f6aa553ee03af3b851c51bb4be
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and appears to be a lure for 'blood relation problems with solutions pdf ibps guide'. The PDF also contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO manipulation. The ML classifier 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.ru/pify?keyword=blood+relation+problems+with+solutions+pdf+ibps+guide In PDF document text
    • http://files.jtfas.org/uploads/1/3/0/7/130738662/170f76.pdfIn PDF document text
    • http://files.sharmellebeauty.net/uploads/1/3/0/9/130969360/tozumirazokolus_lizowa_xovuwipodonixa.pdfIn PDF document text
    • http://files.katewrighttherapy.com/uploads/1/3/1/6/131637108/dedikekanagemixej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6369/7820/files/11918263604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3400/2086/files/safotisetafajirebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8858/0512/files/define_bailment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17844710077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/aaron_beck_cognitive_therapy_of_depression.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0273/9363/files/debatoretubudir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4586/9985/files/fefumodudifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lexopiwalosadatijasaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/kepuzelokerulevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3669/5959/files/data_security_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4826/files/ponapazum.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 3

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_off000065be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BE 5616 bytes
SHA-256: 645bd593b50babb5e4b4b43e7edceb9df4b2394cf689db3fb8910bdcaf79cf68
font_01_sfnt_off000078af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78AF 10516 bytes
SHA-256: aa649e9c9171358d6c0475a7f27622d691ecb5833c3c2770809eb4dab816d7b4
font_02_sfnt_off00009c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C60 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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