Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeaf4303592ca5a1…

MALICIOUS

PDF

60.1 KB Created: 2020-07-29 01:08:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4fe4d438d0aaf916103a3e50e61045a SHA-1: a285fcb8c4f7b6c22be72a6f5789c381b332889b SHA-256: aeaf4303592ca5a1c9095f2b9e366195a527e8036d995989ad81fc2031fb0aee
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains multiple heuristics indicating malicious intent, specifically a redirector link and a link farm. The document body, though heavily obfuscated, contains text related to 'Dvt ultrasound nice guidelines' and 'account will be terminated', suggesting a lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=dvt+ultrasound+nice+guidelines In PDF document text
    • http://files.nhplanetarium.com/uploads/1/3/0/7/130776120/4499418.pdfIn PDF document text
    • http://files.onecityhistoricalfoundation.org/uploads/1/3/2/3/132303320/zovavatiguj.pdfIn PDF document text
    • http://files.cockburnarchitecture.co.uk/uploads/1/3/1/3/131398260/3e12cdf665d7327.pdfIn PDF document text
    • http://files.3realms.ca/uploads/1/3/0/9/130969825/1172000.pdfIn PDF document text
    • http://files.militariarg.com/uploads/1/3/0/9/130969472/juzomar.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/1/0431/9304/1053/files/53792497705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7474/0636/files/bodokizekajugesazorodog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24863128440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6539/2804/files/bosedasutavusexutimul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/kurexufaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3907/2161/files/degilewarusugumekelof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/nedebekojazopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57515970725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/53209994869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/mumaxasitolubekokus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9262/3001/files/safuwovirosabegofurufe.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_off0000afff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFFF 5048 bytes
SHA-256: 9b561f50433bb5e841c244a40ed5705510d6fba2e32515b8e52e02b59e937275
font_01_sfnt_off0000c13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC13D 9908 bytes
SHA-256: d2fb1cc49fe6b7af0a553405b40179f66d3f19cfb513d9046915316fcbded779

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