Malicious PDF — malware analysis report

Static analysis result for SHA-256 45bfc68c6370e792…

MALICIOUS

PDF

41.3 KB Created: 2020-08-01 15:11:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4ede8afa43af04472da4091a28925ed SHA-1: 5f57684f816a919d1c334bb658e3d45e9217eb12 SHA-256: 45bfc68c6370e792e82e3586880b21a694d70dfd490d583ed54d7ca6b3b9804b
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised with a search query for a service manual. The document body, though heavily obfuscated, contains the same lure text and the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous embedded links to other PDFs, likely for SEO poisoning or to spread malicious content across multiple domains. The ML classifier strongly supports the malicious verdict.

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=mahindra+tractor+service+manual+pdf In PDF document text
    • http://files.pinwellbooks.co.uk/uploads/1/3/0/7/130775357/tukabolu_nifadisogujufa_rujeku_wuzuzovuzifixob.pdfIn PDF document text
    • http://files.nancychartierstudios.com/uploads/1/3/1/4/131437285/b692ede.pdfIn PDF document text
    • http://files.dglivestock.com/uploads/1/3/0/7/130776503/jorix.pdfIn PDF document text
    • http://files.poomah.com/uploads/1/3/2/6/132681885/6956639.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/1/0435/2458/7674/files/dobajewozisubav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/zalimojalut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6107/6387/files/24659823954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0727/8238/files/maker_genome_annotation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0837/6482/files/velijuzafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2801/3475/files/sodudakasijixeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9132/9173/files/xexirujem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1415/2607/files/soxaranoxaxotamerav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/gufaleranugakuresofan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7743/4525/files/sabakof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/lodemawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7300/2902/files/nesigifixemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2408/0282/files/zelolodosoxa.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_off000062a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A6 5460 bytes
SHA-256: 337f45a280c61c89e83c0b5600f3b189d26a58ee1617050ed5eaa6d38aa4de3f
font_01_sfnt_off00007520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7520 10420 bytes
SHA-256: f03acd8804f1dac9ea199b0e9ea95a9c34781b41c95513b001998053d219e9fe

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