Malicious PDF — malware analysis report

Static analysis result for SHA-256 20ea7a6e732b3fc4…

MALICIOUS

PDF

60.3 KB Created: 2020-08-11 01:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 778bd9a88ebad97ecc14d0d21f72c79f SHA-1: 258ed8680c3429cc5a351113395bc7ca39b9723d SHA-256: 20ea7a6e732b3fc4a2efa52c38b7f384ddd45be9ba17a28c9417b37bbb524518
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical heuristic identifying a link to known malicious redirector infrastructure. The embedded URL points to 'https://ttraff.ru/pify?keyword=pdf+carburateur+solex+32+34+z2', which is likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains this URL, reinforcing the malicious intent. No scripts were extracted from this sample.

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=pdf+carburateur+solex+32+34+z2 In PDF document text
    • http://dijaliki.allisonknuth.com/uploads/1/3/0/9/130969723/wipejiduruz.pdfIn PDF document text
    • http://files.thebluebbla.com/uploads/1/3/1/3/131398362/papokenosipe_zigoloxavemigu_sugapovole.pdfIn PDF document text
    • http://files.myeaglerestoration.com/uploads/1/3/0/8/130874205/3975938.pdfIn PDF document text
    • http://tosuso.babylimbo.com/uploads/1/3/0/7/130775612/9754484.pdfIn PDF document text
    • http://files.mooseresort.com/uploads/1/3/1/3/131380547/5b6596.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/1/0432/5661/0969/files/california_firearms_laws.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7682/0890/files/acronis_true_image_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2707/7032/files/reducing_and_non_reducing_sugars.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/rowofilikinelefujulupuzol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3816/1561/files/frases_del_dia_de_la_madre_cortas_y_bonitas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7714/8571/files/boxososidebupetuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/wobuzutijupapur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0250/6909/files/rogue_5e_multiclass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/2988/3048/files/53797516889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9122/1911/files/angle_of_elevation_and_depression_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8681/4109/files/suritaviropuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/38915935244.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 2

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_off0000a176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA176 5656 bytes
SHA-256: eb96d727796494234624488b284f469c517db34990c7fa8b612af0048496a6c5
font_01_sfnt_off0000b4ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4CE 14272 bytes
SHA-256: 23bc724a0328634c07fd9baeb24aa925ccc3add19f3af98e9bca55dd34442500

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