Malicious PDF — malware analysis report

Static analysis result for SHA-256 dee363b6961e9598…

MALICIOUS

PDF

36.4 KB Created: 2020-08-07 04:31:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8ab744793b66aac2c1108818117206f8 SHA-1: 2aa3afbf90831c7c8e6299e1326722d01ff53d42 SHA-256: dee363b6961e9598edb89a4402fcd966e2d907bf950b90ec0f877dc0cb00618a
234 Risk Score

Malware Insights

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

The PDF file contains a link disguised as a math textbook guide, which redirects to a malicious URL. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this behavior. The file also exhibits characteristics of a link farm, with numerous embedded links pointing to external PDFs, as indicated by PDF_SEO_LINK_FARM. The primary malicious URL identified is ttraff.ru, which is used as a redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=oxford+math+book+for+class+4+teacher+guide+pdf In PDF document text
    • http://files.vigocountycrimevictimassistance.com/uploads/1/3/0/9/130969184/6711886.pdfIn PDF document text
    • http://puwipo.smilliestudio.com/uploads/1/3/0/8/130814328/sepafozulono-kadogawe-pefogozasigaroz.pdfIn PDF document text
    • http://files.myoppconsulting.com/uploads/1/3/0/7/130775654/fefitit_donarinete.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/1/0434/2959/3245/files/vomilujivimivawiwuxiwefos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96226605796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2687/3509/files/dsp_addressing_modes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/82140990575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9945/4629/files/name_letter_tracing_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9658/8967/files/nomemos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6668/6629/files/deviwifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/tarodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/tulunekapuwurolunimugef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2733/2245/files/96278722178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0804/9830/files/83344367325.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 6

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_off00004dd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DD4 5956 bytes
SHA-256: f89acf0323f2152c81d91eb25e3f536b7c3e3c2a533cd5e04aea6e42318cfbec
font_01_sfnt_off000061f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F4 10244 bytes
SHA-256: 3f49067a9959ea14ca33b15b5eeeca856a139011545f874f3e6d95060ed164a0

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