Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d93fe55d50db800…

MALICIOUS

PDF

43.0 KB Created: 2020-08-21 06:32:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 662da86d46604f84f616114c4f339dc4 SHA-1: 1d33a784af3b2d2101a18ce67f0122a6e471981e SHA-256: 8d93fe55d50db80078e4266f1980660c8562bb4e196897f49e00b8cca3c02d59
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=cite+your+references+apa+format'. The document body, though heavily obfuscated, contains this URL and other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The presence of multiple embedded URLs and the heuristic firings strongly indicate a malicious redirector pattern.

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=cite+your+references+apa+format In PDF document text
    • http://gowefib.thorsonpto.org/uploads/1/3/2/6/132696067/9dc36ecc91.pdfIn PDF document text
    • http://files.catholicchurchofantioch.eu/uploads/1/3/1/6/131606069/gumurimok_sujadudowaxeso_rixorira.pdfIn PDF document text
    • http://files.indianrocks.com/uploads/1/3/0/7/130740521/tilavo.pdfIn PDF document text
    • http://files.lifeloveparenting.com/uploads/1/3/1/4/131453713/relonexudolalu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1927/9258/files/66608710772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4774/5698/files/mivogigowal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/comfortable_lyrics_k_camp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9853/0201/files/11351553055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6970/files/27415101493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7875/0101/files/greenland_ice_sheet_wikipedia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4888/5662/files/post_office_charles_bukowski_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7982/6597/files/84012507261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0286/1464/files/velijexax.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D81 5136 bytes
SHA-256: db86a2d9ae74e5eda4b74c1f28aa6b67cb665a6e02925d6720ad9d933bdd89bf
font_01_sfnt_off00006eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEB 10060 bytes
SHA-256: 4bd310aa0cde5e59a21b93566cb638f1d8d493258a3320978a6fa27c4f800116
font_02_sfnt_off0000915a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x915A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.