Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4cb84d9fad5ed35…

MALICIOUS

PDF

22.1 KB Created: 2020-04-04 06:16:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-09
MD5: defd815ad9b223079cde324c1f400d1a SHA-1: 03cec166dc4f803c9d2da7d11e151696f960669e SHA-256: c4cb84d9fad5ed3520ce7cf305e8ab9ba9ec7af544623015a6c0bee49ee06189
94 Risk Score

Malware Insights

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

The PDF is identified as an image-based lure, typical of phishing campaigns. It contains numerous external links to other PDFs hosted on various domains, suggesting a link farm or redirection mechanism. The primary URL http://falmouth-acupuncture.com/uploads/1/3/0/6/130604006/130604006.html#cuales+son+los+10+casos+de+factorizacion+en+algebra likely serves as the initial entry point for the attack, leading users to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://falmouth-acupuncture.com/uploads/1/3/0/6/130604006/130604006.html#cuales+son+los+10+casos+de+factorizacion+en+algebra PDF link annotation
    • http://skincarebyrachellouise.com/uploads/1/3/0/5/130540401/2245180.pdfIn PDF document text
    • http://lsa-mi.com/uploads/1/3/0/4/130490488/jokogewupexulekibi.pdfIn PDF document text
    • http://dispatchpublishing.com/uploads/1/3/0/7/130775729/1340230.pdfIn PDF document text
    • http://the-personalised.com/uploads/1/3/0/6/130620486/muvetenogitisolunug.pdfIn PDF document text
    • http://bacalandersengarrison.com/uploads/1/3/0/2/130287937/80f8757b.pdfIn PDF document text
    • http://coppercoastcare.services/uploads/1/3/1/4/131437285/tuwasegirexagajewupa.pdfIn PDF document text
    • http://neekascreationsonline.com/uploads/1/3/0/4/130483868/820119.pdfIn PDF document text
    • http://hephub.net/uploads/1/3/0/2/130289399/909559.pdfIn PDF document text
    • http://iddservices.org/uploads/1/3/0/5/130540116/438a74aea7.pdfIn PDF document text
    • http://mijnheerdegroot.nl/uploads/1/3/0/5/130551325/3835326.pdfIn PDF document text
    • http://theshittybutler.com/uploads/1/3/0/6/130620923/jevenozupib-wisaruwigis-dulubazujug.pdfIn PDF document text
    • http://casaovelha.com/uploads/1/3/0/5/130550836/nesejupepo.pdfIn PDF document text

Related samples 2

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