Malicious PDF — malware analysis report

Static analysis result for SHA-256 fff2b75f1c2a52e6…

MALICIOUS

PDF

87.0 KB Created: 2020-07-29 11:56:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7210f25487c52bec819e0c9b51bfebaa SHA-1: 2eff9e2e76638a9670756e952c77cd1de462ea76 SHA-256: fff2b75f1c2a52e6cbdd2901ea7d3d67a7e289a6e9f75d39b800b623f6aa1218
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru'. The document body appears to be malformed or truncated, preventing a clear understanding of its purported content, but the heuristic firings strongly indicate a malicious redirection attempt.

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=nato+phonetic+alphabet+morse+code+pdf In PDF document text
    • http://files.tombarthaexcavating.com/uploads/1/3/1/4/131408432/napupebefadibakefupa.pdfIn PDF document text
    • http://files.cybermongol.ca/uploads/1/3/0/9/130969148/607457.pdfIn PDF document text
    • http://files.sampacloinc.com/uploads/1/3/2/6/132695361/a1351d16846b1b5.pdfIn PDF document text
    • http://files.rkspeech.com/uploads/1/3/1/4/131438249/9075954.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/1/0433/6399/1717/files/24661722842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0360/0283/files/70382555154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1224/4134/files/19662414331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/73586421389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3986/4485/files/wifana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6406/6209/files/nerelir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0961/2712/files/vekekugitoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/xumodezewowotanidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/3630788364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1610/1781/files/63070334400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7932/7141/files/pemekiropemojowisiresu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7827/1651/files/mivitanuvegowos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6209/9097/files/dotoropatemaram.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_off000101c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C3 5292 bytes
SHA-256: f79ae24bcfc4acc82e99056b615c9334bd1546a8ca51cebc83486c2590667c19
font_01_sfnt_off00011381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11381 20436 bytes
SHA-256: f36f58df3b8819f5fce3761060af88324b6297f6e2d97c6f6b61df864690bef0

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