Malicious PDF — malware analysis report

Static analysis result for SHA-256 78c24ac8a81b6bf5…

MALICIOUS

PDF

42.8 KB Created: 2020-08-26 23:24:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7671061eb03faf4033fa94a9203c524a SHA-1: 2b654bc09b23b15a391ecfe4e79c8d4a826a62ab SHA-256: 78c24ac8a81b6bf59820d747a5871c93496edc7797aa9825fa91bf21cd842646
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, many of which point to a redirector service known to host malicious content. The primary redirector URL, 'https://ttraff.ru/pify?keyword=black+desert+emotes', is flagged as malicious. The document's structure suggests it is part of a link farm designed to deceive users into downloading further malicious content or visiting phishing 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=black+desert+emotes In PDF document text
    • http://files.rivieranannies.fr/uploads/1/3/0/7/130739480/29d97.pdfIn PDF document text
    • http://files.portugal-spainmarinesurveys.com/uploads/1/3/0/7/130776327/ceb020bc7.pdfIn PDF document text
    • http://files.imaginationplayhousesf.com/uploads/1/3/1/6/131607063/pevinibupejoru.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/1/0465/9291/7669/files/46264653669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8342/3126/files/21685667498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/35977676515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2653/5832/files/waterfall_model_phases_explanation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8835/4207/files/analysis_for_office_2._6_installation_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3374/7878/files/jeep_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4188/8158/files/failed_download_error_needs_authorization.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2201/6934/files/rf_power_amplifier_design_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7002/9975/files/48344013374.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 8

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_off00005f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7F 5200 bytes
SHA-256: f1a193cb70f08e71674ade062a44b1b770a4703bf5145f9a81634ba3b64e09ca
font_01_sfnt_off0000710b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x710B 14780 bytes
SHA-256: 0e590c734eaf89df413e765962091a713cb02bf4cef82c11a43c15fa72fcf7f5

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