Malicious PDF — malware analysis report

Static analysis result for SHA-256 2391ca16b06102e9…

MALICIOUS

PDF

41.3 KB Created: 2020-08-23 09:37:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b025e9dc67ce75c7fe0572209bf0673 SHA-1: 9131533af9d89577da1ff07c112696988a18d35f SHA-256: 2391ca16b06102e9766312d4709692eb8d77771889f8956c67e157feacd9cc43
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF document exhibits characteristics of a link farm, containing numerous external links. One prominent link directs to a known malicious redirector service, 'ttraff.com', suggesting an attempt to obscure the ultimate malicious destination. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector strategy.

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=dress+code+formal+attire+significato In PDF document text
    • http://files.childconsultant.org/uploads/1/3/2/6/132682293/8691072.pdfIn PDF document text
    • http://files.the-beaver-house.com/uploads/1/3/1/6/131636792/bexax.pdfIn PDF document text
    • http://xevij.blossomblushbelltents.co.uk/uploads/1/3/0/8/130813612/xosiwuj.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/1/0433/0687/7080/files/72619586694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5761/4741/files/jukililorepekitamasudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6641/7567/files/11542490142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/48104507521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0138/6920/files/barium_electron_configuration_spdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1447/1330/files/homogeneous_and_heterogeneous_mixture_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7394/6275/files/21091444364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3601/1678/files/tizoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4440/files/ncc_c_certificate_question_paper_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/kipumexubakapadosofobon.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_off00006444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6444 5340 bytes
SHA-256: 62b0dd5f9464fa7d130171e2682c7d0260fcefdcebba93e1aaa8de91595f3984
font_01_sfnt_off00007651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7651 10060 bytes
SHA-256: 7bbcf01d9384a98af2d15b47fa0141c692e1dc4462de2f34a0d33a4aaf8bda7b

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