Malicious PDF — malware analysis report

Static analysis result for SHA-256 23956020b289dc92…

MALICIOUS

PDF

36.5 KB Created: 2020-08-22 06:45:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 539d58709a2ac813f79452b1ce51799d SHA-1: f38a7c2a6f6dd8a511072cd5819e8a6631ed04e5 SHA-256: 23956020b289dc92dcfde48d95c2ce921c98359d18ff38fd00228cd2cb793361
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF document contains a mass of external links, with one prominent link pointing to a known malicious redirector. This suggests the document is designed to lure users to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=les+chevaliers+du+ciel+soundtrack. No scripts were extracted from this sample, limiting further analysis of its behavior.

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=les+chevaliers+du+ciel+soundtrack In PDF document text
    • http://files.dsslearningcommons.ca/uploads/1/3/1/6/131606550/vemepogiramu.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/1/0429/6271/4773/files/easa_module_08_basic_aerodynamics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/tegisugakuwinirexajij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1412/6759/files/fostering_futures_fact_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/bottleneck_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2723/4722/files/audi_r8_wallpaper_for_android_phone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0903/1840/files/calculus_for_scientists_and_engineers_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5376/3999/files/bipazirovawidopiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/20656539050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3767/0041/files/losojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9472/7074/files/accident_report_number_abu_dhabi.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_off00004fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC7 5092 bytes
SHA-256: 99e323d00957b08f6aba8ef86881d020307a8e6b88a3f029b7fd4f6da0f9bbf2
font_01_sfnt_off0000610d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610D 11496 bytes
SHA-256: 0ac2a94b9f9adbc2e8746eb542d11ef5ce3ac8de0be76248ad027b82e99f29c0

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