Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d6b4563ab08197b…

MALICIOUS

PDF

45.8 KB Created: 2020-08-09 16:50:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa91c82bc957b8345e1dd10d53d9ed7f SHA-1: 23d598c1858640d7b353e24c0ce4d34136fba3a4 SHA-256: 5d6b4563ab08197b3b3660ca4587041c466a9d397a4fe456fc3dc0f00955a071
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic identifying a redirector URL (https://ttraff.cc/pify?keyword=cetoacidosis+diabetica+en+perros+pdf) known for malicious activity. The document body, though heavily obfuscated, contains references to this redirector and other URLs, suggesting a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=cetoacidosis+diabetica+en+perros+pdf In PDF document text
    • http://files.classicmassagestudio.com/uploads/1/3/0/8/130814529/4986065.pdfIn PDF document text
    • http://files.ibomusicalvoyage.com/uploads/1/3/1/4/131452733/3371117.pdfIn PDF document text
    • http://files.chloecustomcollections.com/uploads/1/3/2/7/132712315/gububinusalaxu_nepulaxo.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/1/0440/7531/9448/files/zumikobizisako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/52453088708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/segar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/robopomevavata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/affaire_cahuzac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/61405519778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4075/8170/files/biochemistry_acs_exam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9773/5843/files/68250863444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2117/9802/files/15918683123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2195/4206/files/pdf_converter_combine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10542261424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5553/8591/files/rozefov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/array_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/assembly_language_for_x86_processors_7th_edition_solutions.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_off000070b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B1 5160 bytes
SHA-256: 62af3da59ec66ce9cd420ce05962a1772ea4493c6a8df5fd880381b3b65f67cf
font_01_sfnt_off0000823f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823F 11768 bytes
SHA-256: fecf4c3b6901a736a86dea5c57db043636316392d748af3217a42228eb99bd37

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