Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9bd8fdebb0a1b26…

MALICIOUS

PDF

43.5 KB Created: 2020-08-28 13:12:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d7c9af85e6c501037e96f6983c8cfd1 SHA-1: 3c554912f623aaeea467b03c83c105ca9c5ffba3 SHA-256: f9bd8fdebb0a1b26e6f167bd0bd08b3cda583089473737da968e076b0a1ccc11
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on Shopify, likely to improve search engine ranking and distribute 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.com/pify?keyword=declaration+of+independence+printabl In PDF document text
    • http://files.heritagehs.org/uploads/1/3/2/6/132682966/9133864.pdfIn PDF document text
    • http://files.meehanmentalhealth.com/uploads/1/3/1/6/131607063/16c5ecff.pdfIn PDF document text
    • http://risikum.lindsaysilva.com/uploads/1/3/2/7/132710797/a1bcead.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/1/0437/6965/9549/files/list_of_opposite_words_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2631/6455/files/wristband_mockup_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2315/4850/files/toro_timemaster_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7056/9113/files/gugupupasugipamizimufob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/15896442462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/73974050663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6051/0376/files/tafopatovefawotorid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/48962355655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/fogeparegumiwaxejudagov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5183/5801/files/fashion_design_brochure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/71314793174.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 2

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_off00006c54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C54 5112 bytes
SHA-256: babef84a45ba5b0ebf56a76870cf588a6b642bf5f097d2a59fb3242ba97c4ecc
font_01_sfnt_off00007dbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBE 10268 bytes
SHA-256: a7e416f00748666e43dd036c80c6f40d333598c5e0d85f768ea16dcb5d3510aa

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