Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f2399419b27357c…

MALICIOUS

PDF

42.4 KB Created: 2020-08-21 10:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5261da093060c73f3930a372474a1892 SHA-1: 948f71b2bffce01e548e5100b3012639a0966e9b SHA-256: 5f2399419b27357ca965a1ea0fd40f8a63d5cc2fa2c39a28b037a24a513e0542
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to redirector infrastructure, specifically pointing to 'ttraff.com', which is flagged as malicious. The document body, though heavily obfuscated, contains references to a 'free download' lure, aligning with the 'SE_BROWSER_INSTALL_LURE' heuristic. This suggests the PDF is designed to trick users into clicking malicious links that likely lead to credential harvesting or the download of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.com/pify?keyword=ubuntu+18.+04+32+bit+free In PDF document text
    • http://pidij.keywestresortcasino.com/uploads/1/3/0/8/130813780/mijetel.pdfIn PDF document text
    • http://mirulima.commerceelementarypta.com/uploads/1/3/0/8/130814411/zajinusek-bapez-dadifisegazoras-wukatikux.pdfIn PDF document text
    • http://dututu.canera.org/uploads/1/3/0/8/130874422/9082763.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/1/0433/2906/1014/files/burovekaxemobizuzovexew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8510/3258/files/19292289907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/9941968634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4836/9309/files/koduborexinewuzemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9605/3662/files/25130297293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/c_est_la_vie_bewitched.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/55303533040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3256/8220/files/root_5._1_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/xuwuvimexeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2909/3800/files/automation_step_by_step.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/3071/3244/files/nts_analytical_reasoning_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0569/7438/files/n64_emulator_free_apk.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 3

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_off000067e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67E5 5276 bytes
SHA-256: 90f1d0eae2fa95fa615c0c3369729e3b4795e3daa8119b74d604c77b4f92250b
font_01_sfnt_off000079fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79FB 10112 bytes
SHA-256: 325efc2d9be293ed02f4c16b644fb57bb6461c3006d1a11c0c5bcf695b58f436

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