Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f2a4a854c667bf…

MALICIOUS

PDF

46.6 KB Created: 2020-08-09 14:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c1e100d43c00785ca3eead957dad660b SHA-1: d8118efb0e17a2bee0a7b67b53929eb62b73f03f SHA-256: f7f2a4a854c667bf59b17f5bbbf43018cf76aabcf9e2c1c2e224e2a8145ffb69
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to 'ttraff.ru', disguised as a link to an 'agile software development book pdf'. This is further supported by heuristics indicating a malicious redirector and a link farm. The document body, though heavily obfuscated, contains the same malicious URL and benign-looking Shopify URLs, likely part of the link farm.

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=agile+software+development+book+pdf In PDF document text
    • http://files.timetraveller.sg/uploads/1/3/0/8/130874566/ragukexos-rerevikexuv-zoratabimiras.pdfIn PDF document text
    • http://files.galgositalianos.com/uploads/1/3/1/6/131637553/zonimiwokajux.pdfIn PDF document text
    • http://files.mectacprinstructor.com/uploads/1/3/1/4/131437740/2f469132278.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/sisolewejupusov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/lanida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6815/4278/files/viguzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6305/8340/files/cours_pour_apprendre_l_anglais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/gta_5_online_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2243/3953/files/53678375229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5023/files/27885383657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/85587787952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/toradudefusimibeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4909/0200/files/telugu_online_movies_2017.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0E 5492 bytes
SHA-256: 2f0eb1f1cd56cedf9d2bc860cab69969056ac3051748b1699008601a2b58a514
font_01_sfnt_off00007cb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB9 10280 bytes
SHA-256: dea0b09bd77b0f6917532ba13f7ec0197e410d621c5db246c86834ea04175197
font_02_sfnt_off00009fd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD2 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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