Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b5b1211b61b83e4…

MALICIOUS

PDF

44.3 KB Created: 2020-08-05 05:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b19a5f1310d7ee9004017f52588a3da SHA-1: 39db4de06f0f79ba5ee15823ceaf4b1d4c1f0420 SHA-256: 5b5b1211b61b83e4e8af75960a56c85cc303e47716b96285867564dc2fa81986
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to redirector infrastructure, suggesting a phishing or scam attempt. The primary redirector URL is https://ttraff.com/pify?keyword=tsotsi+athol+fugard+pdf, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in luring users to malicious content. The ML classifier strongly indicates maliciousness.

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.com/pify?keyword=tsotsi+athol+fugard+pdf In PDF document text
    • http://files.11across.com/uploads/1/3/0/7/130738619/mopupolel.pdfIn PDF document text
    • http://files.sfautismsociety.org/uploads/1/3/0/8/130814229/85336.pdfIn PDF document text
    • http://files.fallbrookfoodpantry.org/uploads/1/3/0/8/130813931/tetaxamavozidod.pdfIn PDF document text
    • http://files.artistlyne.com/uploads/1/3/1/0/131070588/4e422f4a.pdfIn PDF document text
    • http://files.startingblocksplus.org/uploads/1/3/0/7/130740524/3209941.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/1/0430/7963/1001/files/favavowow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9159/0308/files/23602086732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7889/3214/files/30403771169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xaxigeruver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7742/6584/files/24244129376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vatamukizulenekop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5308/7897/files/62279299670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/12632915399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0627/9332/files/12426326405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0124/2022/files/kewusenujigupisum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2214/8003/files/bipavunorunoraxuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/gates_belt_cross_reference.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8039/8486/files/rixitutuvejibedazisujoxa.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 5

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_off00007065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7065 5252 bytes
SHA-256: 039d9be06e08d6d09cf284be6afd70c4b83027742a340cecbbc066a4aaef8bf3
font_01_sfnt_off0000823b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823B 10072 bytes
SHA-256: fe5d063c228aafa646e253c6f7110e0b2767a809828e17936f66746db227b25c

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