Malicious PDF — malware analysis report

Static analysis result for SHA-256 9212f81a41e1222c…

MALICIOUS

PDF

41.3 KB Created: 2020-08-13 19:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86dbcad7335fa6b2fc16d8ad98b77d34 SHA-1: ca285f0ad7f4070d16a3e9206d6a773002db67a0 SHA-256: 9212f81a41e1222cf441cce033a8c12a50934435313587f5066d3cb26146f348
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains references to the same URL and a large number of other URLs, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is https://ttraff.cc/wb?keyword=how%20to%20develop%20english%20speaking%20pdf, which is likely the initial lure.

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.cc/wb?keyword=how%20to%20develop%20english%20speaking%20pdf In PDF document text
    • http://files.fineartsacademybelmont.com/uploads/1/3/1/8/131856200/66d7c124f6.pdfIn PDF document text
    • http://sesaxak.waynerichards.org/uploads/1/3/1/3/131397971/7858638.pdfIn PDF document text
    • http://files.lcanavigators.org/uploads/1/3/0/7/130776536/9804736.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/1/0434/7514/0761/files/ashampoo_free_opinie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4041/5644/files/vufitufuburosavarudikod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3808/7070/files/pumunerawexikoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5987/9841/files/62265307179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6312/2843/files/zumevejikamabamenuniva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/39791404488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8794/4094/files/gigojadudosomilomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6831/6055/files/99216329595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/mofovarex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3087/9125/files/carian_cole_torn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/91477422500.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 4

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_off00005fa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA1 5384 bytes
SHA-256: af1ef33d384e6b6a6fc27ee640ca12a351562707c35cfd4096bc1a5bd51edc66
font_01_sfnt_off0000720e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x720E 10848 bytes
SHA-256: 92a00e4cac6708b028c6f85e9a3430324af06611bb8a6a201886750d921153f6

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