Malicious PDF — malware analysis report

Static analysis result for SHA-256 2586fe879e5f23aa…

MALICIOUS

PDF

36.7 KB Created: 2020-08-01 12:17:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9073bd6a83129ef0b99b6b944d81d179 SHA-1: 2e9ef1606932da5949589b27661003b0f6b15978 SHA-256: 2586fe879e5f23aa04feb812acc67329afb58d3e10fd5a80671fc06164daf3d8
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=label%253A+39+id' which is likely used to redirect users to a malicious site. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm designed to obscure the ultimate destination and potentially improve search engine ranking for malicious content.

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=label%253A+39+id In PDF document text
    • http://files.edibleexpression.com/uploads/1/3/0/8/130813765/pavafuruniko.pdfIn PDF document text
    • http://files.darknessisfalling.com/uploads/1/3/0/7/130739158/xowuragotesoteves.pdfIn PDF document text
    • http://files.nonstopinterior.com/uploads/1/3/0/7/130776416/ritures_mukejetemu_ripepoduwokij_zuxolitidex.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/1/0429/9902/1717/files/75323284337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7525/5972/files/40406763311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/xozepanix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6628/6490/files/60683513879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0102/7493/files/env_file_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/60765044439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5757/8138/files/zimadena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1274/2550/files/24596218752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1860/files/49391207404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3425/5266/files/36592071670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0310/0836/files/86739716755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5889/6802/files/datelokat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6327/9767/files/7630598061.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 7

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_off00005242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5242 4996 bytes
SHA-256: b716b2249a01a4377f99230e22d90c3a3877e33f984f0a6fa36f86c1dae8b43e
font_01_sfnt_off0000634b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634B 10272 bytes
SHA-256: 9aaca5e28030c3e8aba188863dadac8ddf1f1137627540ccdc8def55310f0d05

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