Malicious PDF — malware analysis report

Static analysis result for SHA-256 9985e6f5a28e237b…

MALICIOUS

PDF

37.6 KB Created: 2020-08-21 15:16:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ee0062382d69a2e132f8e23fae54686 SHA-1: c6cbf607ef08d3331e1174fec4009fd0e16e6c27 SHA-256: 9985e6f5a28e237bf5c012290d8fb552909eaec97a9e20ec5ef70e592d343677
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=a+level+economics+revision+guide+edexcel, which is also listed as a malicious redirector. The PDF also contains a PDF_SEO_LINK_FARM heuristic, suggesting it is part of a larger link farm, with many links pointing to shopify.com domains, likely to improve search engine ranking for malicious content.

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=a+level+economics+revision+guide+edexcel In PDF document text
    • http://files.reveal-and-heal.com/uploads/1/3/1/6/131606343/xeroba.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/1/0434/5331/7272/files/1276149164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/229905594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1121/1417/files/21281177558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5469/3537/files/axolotl_resumen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3087/0173/files/29882053400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/risk_management_planning_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9576/7706/files/parker_pneumatic_cylinder_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5706/9721/files/jixawotevozodozodupuxit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/kifoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4054/6721/files/mulajupivileka.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 3

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_off00004b1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B1E 5164 bytes
SHA-256: ead345defbfcbc90bcff8f39bef0e78cb6c69453f99134098d1175ce3500b976
font_01_sfnt_off00005c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C99 14772 bytes
SHA-256: 3fab41a86122b60edad343b5795a1628dba5dae75429fd342ff4c7dfe527b60d

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