Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9a922de36d72af1…

MALICIOUS

PDF

34.7 KB Created: 2020-08-23 10:50:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: facb7b75b95205dc4cc58763b7bcb3aa SHA-1: d3445a9cf356786e12fc3f50eee180643494691b SHA-256: c9a922de36d72af1efa61903d7e2f3a3abf96bf256a0e1133cbce193426dc1e3
202 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain (ttraff.com), which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the target URL and mentions "culinary institute of america textbook pdf", likely a lure to entice clicks. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm for SEO poisoning or to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=culinary+institute+of+america+textbook+pdf In PDF document text
    • http://togijoku.dreampathways.org/uploads/1/3/2/6/132680813/2433364.pdfIn PDF document text
    • http://kabak.chrisball-student.com/uploads/1/3/1/0/131070894/1672640.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/1/0435/4398/6330/files/29363706212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9164/0739/files/jonujiporebufepagufunur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6399/1717/files/ketodegavoluvedife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/astronomical_photometry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3048/4904/files/95463224141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9432/6939/files/vukaguvogapozopidogetiler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/jokoremale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/lujoxozosatulosugewodaman.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_off0000492e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x492E 5580 bytes
SHA-256: 62caf12fd53b8c284559709ea97a8eaa376c22571e93cafedfda440b628da31b
font_01_sfnt_off00005c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C17 9976 bytes
SHA-256: 39634b195652f3e9c03e88e39792cf58ac543aa538691122484987b64fae277f

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