Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9291148669a1a75…

MALICIOUS

PDF

43.1 KB Created: 2020-08-11 21:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f482af86d574ff7e0306ed8fb5405db SHA-1: b169ea29c38a1f2f4888a40c74421985e2fa15db SHA-256: c9291148669a1a75b2c55e8d2f8ccf34e37710be2b00523d34566aad9409c32f
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites.

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.ru/pify?keyword=paint+shop+pro+7+user+guide+pdf In PDF document text
    • http://files.canyoncreeknaturals.com/uploads/1/3/1/4/131453924/muzobufibexududi.pdfIn PDF document text
    • http://punike.under--17--driving--lessons.co.uk/uploads/1/3/1/3/131379179/8603136.pdfIn PDF document text
    • http://files.southernsass.shop/uploads/1/3/1/0/131070526/wujufe-bodimudesatiz-zekunikep.pdfIn PDF document text
    • http://files.tilefo.com.au/uploads/1/3/1/0/131070711/zabafubuvobos_duxoxabi.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/1/0430/4856/6933/files/extra_utilities_crusher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/xobafezotuvajik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/materials_and_the_environment_michael_ashby.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3015/0309/files/nizusuxotiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4977/1430/files/twilight_life_and_death_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4542/9160/files/74644231498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1466/8959/files/apeman_trail_camera_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/7512/0807/files/canciones_para_guitarra_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6955/5356/files/89203009126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wifufokamavobopizevotug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/gegekivetamabuzixobod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8388/8808/files/assessing_construct_validity_in_organizational_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8987/7408/files/20892256074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/91785346505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3870/files/lusagaxumowurodu.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69D6 5352 bytes
SHA-256: 21e4c8616e3207722ab0e9b8502e6c25e5e83effec3d18b1046d9caebb629597
font_01_sfnt_off00007c05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C05 10312 bytes
SHA-256: f8498c0192a9a6b3c252adc87cddc8e0943e83d4cb9f18626e44d1e4ae2c99e0