Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb4af61d265d0b88…

MALICIOUS

PDF

40.8 KB Created: 2020-08-11 05:10:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf76f7f4176c53f9e918ac70f42f47b3 SHA-1: a789f7339710904848f883fc07b13920334b64e0 SHA-256: fb4af61d265d0b8827a208babf3e0f8329e4a78450e373d67d12dfdcf8df1ac6
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, https://ttraff.ru/pify?keyword=sistema+politico+socialista+pdf, is designed to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to the same topic as the malicious URL, suggesting a lure. The presence of multiple Shopify-hosted PDF links indicates a link farm strategy to improve SEO and distribute the malicious payload.

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=sistema+politico+socialista+pdf In PDF document text
    • http://files.jamtumedia.com/uploads/1/3/1/4/131437632/2116a7ce9d9.pdfIn PDF document text
    • http://bigoxam.laurentianchurch.com/uploads/1/3/1/4/131438641/fenoset_fefoxalunukikes_zawivuxumip.pdfIn PDF document text
    • http://wugagexur.mysoulsingsstudio.org/uploads/1/3/2/6/132683014/zufovawipidakasine.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/1/0434/1746/9080/files/malovofepowipumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/29197128228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2057/3080/files/xibabokimezoziximo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/58535213423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/98581673973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5817/5908/files/jeraxeduwexuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4166/0826/files/xaxuriporikegopixirenogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6900/6236/files/wugupivezoretim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3183641906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nofalefupipalivudekim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8271/8107/files/6828138065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2131/0875/files/66068910820.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 1

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_off00006182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6182 5308 bytes
SHA-256: 5ad6cf7c75bc3ae97ad6b93fc746ad181e8aa44a9bc054e31ff69a058943e395
font_01_sfnt_off00007376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7376 10380 bytes
SHA-256: fad4a49cccdaa5b1b26a929594a2fcbb8df64a1c97bd1e2a5d58b15d8e60e652

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