Malicious PDF — malware analysis report

Static analysis result for SHA-256 7af87c308010fb4f…

MALICIOUS

PDF

44.5 KB Created: 2020-08-04 06:55:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34a262db740857ced8d9485ca0f146a1 SHA-1: 3f08315f10fc6e7ba81eab433d02b47a8e80deea SHA-256: 7af87c308010fb4f33d0df5bc554fe0b93312d5409112d8b5e5b7a4e7184932d
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector URL associated with malicious activity. The document body and embedded links suggest a lure for downloading a financial textbook, which is likely a pretext for distributing malware or phishing. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL further supports this assessment.

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/wb?keyword=foundations%20of%20financial%20markets%20and%20institutions%20pdf%20download%20free In PDF document text
    • http://risix.matsumastergardeners.com/uploads/1/3/0/8/130873876/vofowudazeter_bururanamez.pdfIn PDF document text
    • http://files.kellygallagheririshdance.com/uploads/1/3/0/7/130740462/tikenunotifimo.pdfIn PDF document text
    • http://files.animspree.com/uploads/1/3/1/6/131606174/nafajiwisafapa_fofifalozodinu.pdfIn PDF document text
    • http://files.empowerptandwellness.com/uploads/1/3/0/8/130874169/nuvin_bakobalowelex.pdfIn PDF document text
    • http://files.ethelbustamante.net/uploads/1/3/1/4/131406356/7012749.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/1/0432/7958/1352/files/vosunakovubuxuruzibowukez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/ferexofuxujijisefiludoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/49029309342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/50492775212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/98217401073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5113/0785/files/11664016804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/78599753447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0908/9447/files/vukagosubisibesebinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/49007954951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1320/0282/files/letabumixopofuralusazafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706In PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3969/2699/files/zavevazadorejonab.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_off00006e05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E05 5412 bytes
SHA-256: 48fb71098c9449181a6d7cc8f02fcb58b26354214e3c1763652a5edd03968905
font_01_sfnt_off00008071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8071 10568 bytes
SHA-256: 12bd2e9ecd06eed4e58ffe7b38c49e6c34a5723e9c02814e3746278e8eddfe6e

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