Malicious PDF — malware analysis report

Static analysis result for SHA-256 769c45e01d44bdf8…

MALICIOUS

PDF

41.7 KB Created: 2020-08-11 19:35:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41a1346815a75a1437ba2ada422a1e14 SHA-1: 54796eb24b773d9815844994afd4845da92eaed6 SHA-256: 769c45e01d44bdf8f4c2741b2135aa9ef98d75ea2dab3f99c8c84f6a719299d7
194 Risk Score

Malware Insights

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

The PDF contains multiple links to an SEO redirector, which is a common tactic for phishing and malware distribution. The primary redirector URL is https://ttraff.cc/pify?keyword=oxford+discover+2+pdf+vk, which likely leads to a malicious payload or phishing page. The document body, though heavily obfuscated, contains references to this redirector and other PDF download links, indicating a link farm designed to attract users searching for specific documents.

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=oxford+discover+2+pdf+vk In PDF document text
    • http://files.addisontreeremovalmemphis.com/uploads/1/3/1/0/131070178/xovod.pdfIn PDF document text
    • http://jusos.yfbf.org/uploads/1/3/0/9/130969724/xonawep.pdfIn PDF document text
    • http://files.snackscast.com/uploads/1/3/1/6/131607930/bcbb99.pdfIn PDF document text
    • http://nesuto.thesanctuaryatdennypark.org/uploads/1/3/1/4/131452861/fokexasimixakori.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/1/0428/7237/3411/files/aprendizaje_basado_en_problemas_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/artificial_intelligence_book_by_deepak_khemani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1610/1798/files/44491237993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9722/5368/files/97745580163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3722/1276/files/12832611620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8178/5753/files/gunaviwowupos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5593/8725/files/wosazuxopijezogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/74545078483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/cognitive_biases_in_visualizations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1436/4059/files/2896739046.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 6

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_off000065a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A5 5260 bytes
SHA-256: c4cc0e15e79ed82452cd6c32b8358666cafb8a863872e2a37888d04e95a42fb1
font_01_sfnt_off000077af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77AF 10088 bytes
SHA-256: 4de25f55a23be16a2396e06bf363cc4cce0b84d707e223bb37bfb5c9721d2e5b

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