Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb06bf53bdb8bc81…

MALICIOUS

PDF

43.1 KB Created: 2020-08-05 11:48:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5745c18828325575bdcbbd9c65de34db SHA-1: a1286d2ab56c9c9b7cdbc0bb806eb98af4ac14b6 SHA-256: eb06bf53bdb8bc8104ef6ac3d1c638059d4d9aaf91d7fc7e0f8e775d363cf517
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary one leading to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'heat detection in dairy cows' and references to 'wkhtmltopdf', suggesting a lure document. The presence of multiple Shopify-hosted PDF links indicates a link farm strategy to obscure the final malicious destination. No scripts were extracted, limiting the analysis of direct payload execution.

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=heat+detection+in+dairy+cows+pdf In PDF document text
    • http://files.tynksgemstonedesigns.com/uploads/1/3/2/7/132740415/7381d2f1749d4.pdfIn PDF document text
    • http://files.villinlannen.com/uploads/1/3/0/8/130813769/naxix.pdfIn PDF document text
    • http://files.dehoniansocialjustice.org/uploads/1/3/0/8/130874197/4935510.pdfIn PDF document text
    • http://files.tiffanythetherapist.com/uploads/1/3/0/8/130874246/fufajetemipaduvufuk.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/1/0433/1097/3083/files/rebedigazupawegewol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4852/6246/files/limakuxazipokikekugekize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3988/1376/files/23967397636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/mavevadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6502/4412/files/gopodorizekesesuxojovira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8234/2815/files/wojoperiwugalimutuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/diralujamajawupakame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1080/8213/files/66180918380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6967/files/hearthstone_arena_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49726552648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/honda_gx160_parts.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_off00006a56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A56 5272 bytes
SHA-256: 6a381cfa62ac5ee736b36e5c9ca8b62ce6ecc2350d1751bf42e58665c6a38424
font_01_sfnt_off00007c6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6E 10368 bytes
SHA-256: 4d4f51d0b77ef1ee81f2a59a6ee2ca1999f9d36a1bfb0f69c45794ab0c71a5af

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