Malicious PDF — malware analysis report

Static analysis result for SHA-256 79181c8eb4f8c81e…

MALICIOUS

PDF

67.2 KB Created: 2020-08-09 04:46:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8508a65f7417c70d3d50137b735678f3 SHA-1: 83855d866d90fdb3c290a43bee9fa5feee6a8b66 SHA-256: 79181c8eb4f8c81e1f74a4b20c376481ad77883cabbd27ceda2166408c54e3a6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirection and a link farm, specifically pointing to 'ttraff.com' as a redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=shakespeare+plays+pdf', suggesting a phishing or scam attempt disguised as a document download. The presence of numerous external PDF links further supports the SEO spam and redirection tactic.

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=shakespeare+plays+pdf In PDF document text
    • http://files.jbschuleranimation.com/uploads/1/3/1/6/131636725/gerotuge_zivofu_vulunegezu_zekesusuk.pdfIn PDF document text
    • http://files.hardinsburgbc.org/uploads/1/3/2/8/132814343/lewosup.pdfIn PDF document text
    • http://files.tahoejahr.com/uploads/1/3/2/7/132740949/4784912.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/1/0437/8820/6238/files/john_deere_lt155_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9079/5941/files/35940337599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5297/1685/files/icse_class_10_biology_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8362/8697/files/javascript_array_foreach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5512/8480/files/rumodenewiziwidafidadinud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/5262028021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/61674467549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/79000958931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1619/1138/files/xifepavudekevibezinavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8351/2473/files/pojaposiroju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/bardonecchia_piste_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4244/6229/files/paxaxulusozifarukagum.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E1 5400 bytes
SHA-256: f688f63ad1cd9586e4c7318cb55c7669d5cc789d65fd248107a9428c4d7aefe2
font_01_sfnt_off0000dc41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC41 10520 bytes
SHA-256: 49ac5b963533937de7f03d470a06369b345ee6f65c2f90f30ee232afb29b4cc3

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