Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e82417749a335c9…

MALICIOUS

PDF

40.4 KB Created: 2020-07-30 21:31:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f4c9b9f8700f531e45c77412a5c8ab67 SHA-1: 0756272d121764d26a358e327ba5fcb29e2c2b89 SHA-256: 8e82417749a335c93c69906d57203274baffac481f20dcc905ac04b2efe67d41
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, a common tactic for redirecting users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies a link to ttraff.ru, a known malicious redirector. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting an attempt to obscure the true destination or engage in SEO manipulation for malicious purposes. The ML classifier also strongly flagged this PDF as malicious.

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=geometrical+tolerances+book+pdf In PDF document text
    • http://files.bbcgibson.com/uploads/1/3/1/4/131406288/8550372.pdfIn PDF document text
    • http://files.tymprojects.site/uploads/1/3/1/4/131453111/nosofaloguveta.pdfIn PDF document text
    • http://files.iowarabbitrescue.org/uploads/1/3/1/6/131607110/76fba9e8e6.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/1/0433/0687/7080/files/fusuzirosaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3161/5909/files/tudukuresipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/58614123325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7055/3250/files/birepag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9850/4354/files/zivagewevoxuxobisadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8347/2802/files/medupifunetinuvibilomode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/75055853565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0912/0152/files/61225967475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/8509302142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5241/7703/files/sadoponotilesugoposoxaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3033/2060/files/90878965197.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 4

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_off00005fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBA 5324 bytes
SHA-256: abef6a7dfce2a518d3111b693d550c6f4de186720e815f08409aba88189388b7
font_01_sfnt_off000071b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B5 10172 bytes
SHA-256: 3134482657d4784d66f39bd020462c505b33ad079f57c703c4ad477c99e02bce

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