Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ae644a22dd611b0…

MALICIOUS

PDF

36.9 KB Created: 2020-08-12 11:42:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 20c499bd0d7e1f4b9ba61a2c90484401 SHA-1: 7f60113a9a81a9d0ae638255d0910d6dc923ecf1 SHA-256: 5ae644a22dd611b0eafd068be7af342c443a487bd20c7ebd755f5eeea8cf72ef
194 Risk Score

Malware Insights

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

This PDF document contains numerous links designed to appear as free downloads, but they redirect to malicious infrastructure. The primary redirector URL is https://ttraff.com/pify?keyword=introduction+to+cataloguing+and+classification+pdf, which is flagged as malicious. The document body and embedded links suggest a phishing attempt to lure users into clicking on these deceptive links.

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=introduction+to+cataloguing+and+classification+pdf In PDF document text
    • http://files.gretchenkelleywrites.com/uploads/1/3/1/3/131398560/7366450b08c.pdfIn PDF document text
    • http://tozofexof.drowningpreventionresources.org/uploads/1/3/1/3/131383483/3ea7eba99ee7.pdfIn PDF document text
    • http://files.hckidsbooks.com/uploads/1/3/0/8/130813612/1121592.pdfIn PDF document text
    • http://files.skipstonepublishing.com/uploads/1/3/1/8/131871745/b4025f07fb.pdfIn PDF document text
    • http://zumonirew.impactcommunications.org/uploads/1/3/1/6/131606255/17e03.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/1/0434/2631/6455/files/41155117568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4225/7561/files/quimica_inorganica_resumen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9275/4080/files/54765246517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9617/8845/files/jafisipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9579/3568/files/asc_842_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2902/0317/files/lobasejojalipaxofuposulob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/12747370825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3482/1287/files/28322309572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/tabedawazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6717/9162/files/19177532886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/mitosate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/ethical_issues_in_quantitative_research.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_off000050a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50A2 5260 bytes
SHA-256: 339b6c96d59577b884b3eed20e1e7f492911a1bd54a34e2178dd11d745348294
font_01_sfnt_off00006295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6295 10596 bytes
SHA-256: 02b4c52e6d60ae3a9abd0c1ebc3ef98512337f0507bf8f6cf664b8dc3a77e898

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