Malicious PDF — malware analysis report

Static analysis result for SHA-256 f93175b26f0c6b34…

MALICIOUS

PDF

67.2 KB Created: 2020-08-07 05:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c8424ae68cd3dc3f138e0bccef3d04ed SHA-1: 6e90663e3f28fe14578eb16f7a48d49ca001fdc7 SHA-256: f93175b26f0c6b340417ffa319dc4f79d17310433a13bf56faea9774774ffbcd
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the string 'Meiosis division pdf' and the URL 'https://ttraff.cc/pify?keyword=meiosis+division+pdf', suggesting a lure related to educational content. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for malicious content.

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=meiosis+division+pdf In PDF document text
    • http://fosarusip.gregwhite76.com/uploads/1/3/1/3/131398140/subagipexa_remamoja_xogedixememix_wifubuveg.pdfIn PDF document text
    • http://files.playfullpotential.com/uploads/1/3/1/3/131383575/faxukamuz-dulefefem.pdfIn PDF document text
    • http://files.ruthlowestory.com/uploads/1/3/1/8/131856956/paromi.pdfIn PDF document text
    • http://files.daveleeart.com/uploads/1/3/2/7/132712325/koniza-bunadupurip.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/1/0432/4674/7803/files/jaxibefodamimivizozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/zufagozanozepas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6003/5735/files/10292581866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9350/7739/files/xewisupivefifiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/gafuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2378/4360/files/medoweronibaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9394/1671/files/majav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/robokofibizetij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/0570/1284/files/neumonia_viral_y_bacteriana_en_pediatria.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 1

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_off0000c80a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC80A 4760 bytes
SHA-256: 425eb40b14a833265a877b06e0a133111c2726af01b44a8c698498e7621fcb46
font_01_sfnt_off0000d86d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD86D 11608 bytes
SHA-256: aa52d54d03147b61b2201fa0b043fe9b33b968a7bfc9eec6a49f8802e591ea70

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