Malicious PDF — malware analysis report

Static analysis result for SHA-256 75f194a81a8f0cd1…

MALICIOUS

PDF

40.6 KB Created: 2020-08-23 01:56:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c697c48880c82498037a3dce127fe11b SHA-1: 304286620ee1c9cd2a198315bb24e22cceab8b51 SHA-256: 75f194a81a8f0cd12de51a4649f4796aa158210f4eb4f468550e22c4324b7bce
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains a reference to the same malicious URL, suggesting an attempt to lure users to external sites. The ML classifier also strongly indicated maliciousness.

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=math+slope+intercept+form+worksheets In PDF document text
    • http://xinifuwo.leadingyouhome.org/uploads/1/3/0/9/130969204/roxoxofez.pdfIn PDF document text
    • http://files.just-jane-designs.com/uploads/1/3/2/6/132681153/a0205f35f3c0bfd.pdfIn PDF document text
    • http://files.envisioned-events-elite.com/uploads/1/3/0/8/130814423/7523459.pdfIn PDF document text
    • http://sesivux.kingfisher-strategy.com/uploads/1/3/2/3/132302868/9874854.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/1/0431/2550/6208/files/51587064597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7337/1288/files/portfolio_lighting_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/6678/5691/files/czardas_violin_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1980/4578/files/waxewevuxukadog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/environmental_compliance_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/88478406067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4944/1688/files/depejeziliru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/zuma_s_revenge_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7086/4037/files/tevagepikexemasavoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/66595476194.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_off00005add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADD 5416 bytes
SHA-256: b84df921f4fe84c0463ed9552962384d7013adde34e275b995dbfe09f771c7e3
font_01_sfnt_off00006d35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D35 12600 bytes
SHA-256: fb86ebcf7c1d28286c609eb889b59b556744821f57fa4261c2af02f65e83aaa0

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