Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cda61e5d0e64d03…

MALICIOUS

PDF

36.6 KB Created: 2020-08-21 07:17:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47ecb4634634d670920141a17e4ba167 SHA-1: ad17bac74fe11b6234cfd6525d334de90a70cc7a SHA-256: 7cda61e5d0e64d034a91a51b6e3aebf4235a5aa5f53f7ba88ef94a65e758c827
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'Thanksgiving math coloring worksheets' and the malicious redirector URL, suggesting a lure for users to download potentially harmful content. The presence of many external PDF links, some benign and some unknown, indicates a link farm strategy to obscure the malicious destination.

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=thanksgiving+math+coloring+worksheets+1st+grade In PDF document text
    • http://vetaba.topofthesouthclinic.co.nz/uploads/1/3/2/7/132710714/molefosob.pdfIn PDF document text
    • http://files.cmoseleymusic.com/uploads/1/3/1/4/131438313/rurojibimilix_dunox_waxas.pdfIn PDF document text
    • http://files.trialinnovations.com/uploads/1/3/1/4/131483371/varuniraviwipog.pdfIn PDF document text
    • http://files.salinaseminarseries.org/uploads/1/3/0/7/130739918/zikewu.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/1/0433/4590/3781/files/mecanismo_de_accion_de_anticonvulsivantes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/17949728017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/2262885475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4836/9309/files/20079791393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0550/1852/files/dasgupta_vazirani_algorithms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/68446287867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2608/7064/files/baruxomenepuwakonavesozif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/lusulurefagudabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2675/0357/files/pogira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/either_and_neither_grammar_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5032/8486/files/79491982822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5409/4743/files/dadabezuvi.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 8

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_off00005140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5140 5568 bytes
SHA-256: 337938d32a9a3d86ce18f12ac97969ac3fe1ca9061d1f7a1d199e26feab98d1c
font_01_sfnt_off00006413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6413 9692 bytes
SHA-256: ba17075e03cabd1b244d10af46f68b616340ed9b30ef66e6569377ef1e7f6897

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