Malicious PDF — malware analysis report

Static analysis result for SHA-256 f45e9623c5e7bf3d…

MALICIOUS

PDF

34.5 KB Created: 2020-08-20 21:48:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9dcf6854d050d615eac5535633c95c6e SHA-1: 781a4a5b054fc8472b9176dd3f48299029cfc502 SHA-256: f45e9623c5e7bf3d3270d3994c4ed8fecce48f8011ccf939f7e532a3f1b6b77a
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=bios+utility+asus'. This URL is embedded within the document body, disguised as a BIOS utility. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to malicious infrastructure.

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=bios+utility+asus In PDF document text
    • http://kimapaxup.bbt-livonia.com/uploads/1/3/2/3/132303354/18d0dca34.pdfIn PDF document text
    • http://wanedizo.aetherealsea.com/uploads/1/3/0/7/130775203/9a1da3b9c252.pdfIn PDF document text
    • http://files.maslowspeak.com/uploads/1/3/1/4/131453934/3554054.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/1/0432/7473/1685/files/medenerota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1786/files/8492198120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/54369926385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1662/6081/files/convertir_de_a_word_gratis_nitro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7963/1001/files/58863410725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3547/6636/files/discord_markdown_text_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5440/7580/files/niwitidebifikul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0096/9896/files/98136912300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1908/9566/files/ibm_cognos_tm1_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/34163688750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0256/8599/files/tonisazirofof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4528/1183/files/16064205882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1295/1961/files/gta_5_pc_cheat_codes.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_off00004cba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CBA 4736 bytes
SHA-256: bdd4c0e5991ed3d59393b8ed90c9fe17ecbcfa75ad4ba6bef51a67d2e117ddba
font_01_sfnt_off00005cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEA 9628 bytes
SHA-256: ed0ce4a6b958a4e64e8bc18993a993b5ab65c3859f9df72fa87bfdcfb84fd670

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