Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b85d6351b1887c7…

MALICIOUS

PDF

42.8 KB Created: 2020-08-09 19:58:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0e15ffe6ca34fa03cb7599a90cfa4dc4 SHA-1: 6ca1f0e38045222e2340a5d6c976e77882607386 SHA-256: 6b85d6351b1887c7e07726e20b96de83ba42c3472cc3ac787effd773757cece5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service designed for SEO spam. The primary redirector URL, https://ttraff.ru/pify?keyword=braiding+machine+design+pdf, is flagged as malicious. This indicates a likely attempt to lure users to malicious infrastructure under the guise of providing a document, potentially for phishing or malware distribution.

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=braiding+machine+design+pdf In PDF document text
    • http://files.shaneproductions.com/uploads/1/3/2/6/132681391/gidabewarazu.pdfIn PDF document text
    • http://files.sociallysquared.com.au/uploads/1/3/1/4/131483201/f36a52dcf.pdfIn PDF document text
    • http://files.threeriversstudio.com/uploads/1/3/0/7/130776131/4e16d7e2b.pdfIn PDF document text
    • http://files.adornkids.com/uploads/1/3/1/8/131856068/9648078e1ec.pdfIn PDF document text
    • http://files.elizabethengstrom.com/uploads/1/3/1/4/131406173/tamogunex.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/1/0430/3680/3233/files/31821577112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0985/8984/files/genobadifabal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/98326180571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5463/6949/files/ligadura_de_arteria_carotida_externa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2107/2546/files/aisin_clutch_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4228/2394/files/questes_administrao_geral_e_pblica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4781/3269/files/nodosexetelofelotixosola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/futupinoxotederoxewol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/bring_it_on_home_to_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/20493652592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5679/8627/files/gejoxeroxusafalu.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 7

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_off00006720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6720 5588 bytes
SHA-256: 73afaee963897ce083a491b8fee5aaea6479b240194133852ef4c13b3ec4cfd0
font_01_sfnt_off000079fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79FC 10992 bytes
SHA-256: 7be4eb8b6497598bd4752df481622289ca89df54d8d48cf3a78b891abfbde231

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