Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd78fac5e22dd650…

MALICIOUS

PDF

14.2 KB Created: 2020-05-23 08:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 105c771c6d0891a267b8429b17263389 SHA-1: 1c0472495cb37611e3bc0ddcd460a1d3e197ea70 SHA-256: dd78fac5e22dd65096e49eb7b4f994e893730dcdd5cef0a2dd3c185c03d9e9bf
112 Risk Score

Malware Insights

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

The PDF is identified as an image-only lure, typical of phishing campaigns. It contains numerous external links, many pointing to PDF files hosted on various domains, suggesting a link farm or redirection mechanism. The primary URL extracted, http://anniewildeystudio.com/uploads/1/3/1/6/131606803/131606803.html#pharmacology+made+ridiculously+simple+pdf+free+download, is likely the intended destination for the user, potentially leading to further malicious content or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

Heuristics 4

  • 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-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 14 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://anniewildeystudio.com/uploads/1/3/1/6/131606803/131606803.html#pharmacology+made+ridiculously+simple+pdf+free+download
    • http://donchestnut.com/uploads/1/3/0/6/130621582/5395614.pdf
    • http://aimhigherenterprises.com/uploads/1/3/0/6/130639922/8509116.pdf
    • http://sacredsoulmysteryschool.com/uploads/1/3/0/7/130738753/0dafcd5bb977ec4.pdf
    • http://pplacegearshop.org/uploads/1/3/0/5/130588850/711863a.pdf
    • http://n0wplaying.com/uploads/1/3/1/8/131856627/zevuruwipijeme-kekusuzesafixi.pdf
    • http://mail.allisoncamerongray.com/uploads/1/3/0/5/130589401/bukotoluwafewebozas.pdf
    • http://vcstemposium.com/uploads/1/3/1/4/131453681/kufelubekuv-bupaxo-lunufevetufadu.pdf
    • http://dawnwolfe.com/uploads/1/3/1/0/131071289/venis_nevafenojoz_desuvupeb.pdf
    • http://braintree.ca/uploads/1/3/0/9/1309696

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