Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9893f4b5d73bad4…

MALICIOUS

PDF

52.3 KB Created: 2020-08-11 09:19:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 461384a3009b173e93d5502cbb18985c SHA-1: f8476db9df5c52ec7ebae3899386b2eacf2ea160 SHA-256: c9893f4b5d73bad44ea971ec542250c0b56e2847f0e991ef201e7d1adce5019f
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wb?keyword=advertising%20and%20sales%20promotion%20management%20pdf'. 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, with numerous external PDF links, indicating a potential SEO poisoning or spamming campaign. No scripts were extracted from this sample.

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/wb?keyword=advertising%20and%20sales%20promotion%20management%20pdf In PDF document text
    • http://files.bracedental.net/uploads/1/3/1/3/131380288/6598131.pdfIn PDF document text
    • http://files.g3valeting.co.uk/uploads/1/3/0/7/130775484/lajazizimuk-pavikasufuro-tutulufurugum-tojin.pdfIn PDF document text
    • http://buzokupo.swagefitness.com/uploads/1/3/1/6/131606349/fisidexaxaxomuzi.pdfIn PDF document text
    • http://kisevew.savannahwallett.com/uploads/1/3/1/4/131407995/miwigabakul_kijogovo_watijitinex.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/1/0434/1910/7480/files/maxetuwiwefubata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4495/3509/files/52575078155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4446/0951/files/34124669109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7350/files/suxigowizoseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9875/0619/files/arcos_e_angulos_na_circunferencia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/57976332002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8697/6926/files/vilinofilixofamutefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4494/5571/files/zabemajiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1152/1187/files/dnd_5e_divine_sense.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5293/3024/files/42837386340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6353/2951/files/miopa_hipermetropa_y_astigmatismo.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 5

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_off00008e2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E2C 5412 bytes
SHA-256: 440a1c5b2342370e1fce55efe7d5438cdc4074166763fd65f42e935f874e336a
font_01_sfnt_off0000a083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA083 10336 bytes
SHA-256: 1278b2c8c01e440072781cde2b43ab16a8db7c579d8274b1a5500ae925745d81

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