Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a24bb215be1752a…

MALICIOUS

PDF

39.5 KB Created: 2020-08-05 20:01:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99b0a97a1a07e7a8204bc7cec4cca536 SHA-1: fbfa4071fd73372bb6d0ddf800e36c421a0d24bd SHA-256: 2a24bb215be1752aa532d4b0c67cf8a31cd1bee96976b20748b2a015182f75cf
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains this URL, suggesting the intent is to redirect the user to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF.

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/wb?keyword=solving%20simultaneous%20equations%20using%20matrix%20pdf In PDF document text
    • http://files.vickilynnsboutique.com/uploads/1/3/0/9/130969545/3d7311.pdfIn PDF document text
    • http://files.yasminesinno.com/uploads/1/3/0/7/130739169/xozumojorotafog_sibit.pdfIn PDF document text
    • http://files.mmac.org/uploads/1/3/1/3/131380666/8252533.pdfIn PDF document text
    • http://files.laurapayne.net/uploads/1/3/2/7/132712000/vevutinak-nobugorobokol-wibaw-pezugikewa.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/dedepisolutiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2684/0737/files/21056864307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/fap_titans_promotions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/loderivifalorifida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0986/files/46570081782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4229/files/30894698911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3039/5552/files/xonaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/98178513094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2506/1272/files/emotional_intelligence_book_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8030/3263/files/vasozevasolefabu.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 6

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_off00005a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A69 5720 bytes
SHA-256: d66daf70bb0d319594cc377e7fe9de725cc6a7a8d3500132cd9f3984a43c13f5
font_01_sfnt_off00006dc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC7 10316 bytes
SHA-256: 2212504cfe30c0f13989ad57afad75192929781dfc67eedb6f39fca96aa5e159

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