Malicious PDF — malware analysis report

Static analysis result for SHA-256 18bead57e4693016…

MALICIOUS

PDF

41.7 KB Created: 2020-08-08 01:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6baafbdcdd98a76d9aa0da14fa294a1 SHA-1: 69082b7a8f18b109783577833260b6738b5fdf63 SHA-256: 18bead57e46930166c46e6eabceec9218b73a1fd97395c435aa6d4366a68c908
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=learning+autocad+plant+3d+pdf, which is identified as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to lead users to malicious sites.

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=learning+autocad+plant+3d+pdf In PDF document text
    • http://files.sharonstephenson.co.nz/uploads/1/3/1/0/131070035/7785624.pdfIn PDF document text
    • http://tudagevep.akyeraalexiphotography.com/uploads/1/3/1/4/131483281/8256246.pdfIn PDF document text
    • http://files.getbentzfarm.com/uploads/1/3/0/7/130739652/wotakat-mojenitefexi-karelanonexezif.pdfIn PDF document text
    • http://files.motherofmillionsfoundation.org/uploads/1/3/1/1/131164313/wutiposegoxilor-rovob-pesodejet.pdfIn PDF document text
    • http://files.oundlehockeyclub.com/uploads/1/3/2/7/132710763/1c5e2994f1b73e7.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/1/0445/3846/2372/files/git_force_overwrite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9699/8041/files/aradia_gospel_of_witches.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8944/4510/files/sepulak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/1021._remove_outermost_parentheses_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0807/1576/files/diccionario_biblico_ilustrado_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6513/0660/files/17561914854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/galake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2986/2312/files/how_to_cite_a_lab_manual_acs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1586/3452/files/70979419882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3579/4344/files/48451993978.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_off0000674c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674C 5248 bytes
SHA-256: 7841c9996fa549436a5cf7144716abe966e9fc81fbac03dd7bd8f03644e76818
font_01_sfnt_off0000793e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x793E 9620 bytes
SHA-256: 0b0022909a8fb569e65b7bb80f0432d76742786c09e0f3c402c33a1876e70966

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