Malicious PDF — malware analysis report

Static analysis result for SHA-256 f19aab226a492fcb…

MALICIOUS

PDF

39.2 KB Created: 2021-03-16 04:56:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03485786bd445468781d027838052e03 SHA-1: edd1da02da1463fedbbadef5ff82c87eed4454cf SHA-256: f19aab226a492fcbbe24484ebfc5e256673983b826179d76f5b38f527c610e42
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable link. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, suggesting a tactic to distribute malicious content or engage in SEO manipulation. The ClamAV detection and ML classifier further support its malicious classification, pointing towards a trojanized phishing document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8477

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 39 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 https://fokemale.ru/wix?keyword=century+car+battery+charger+manual
    • https://latobebesat.weebly.com/uploads/1/3/5/9/135993630/5121506.pdf
    • https://jokanile.weebly.com/uploads/1/3/5/9/135962808/nobedaxelevozufode.pdf
    • https://cdn-cms.f-static.net/uploads/4417659/normal_6014b25048d2b.pdf
    • https://jiwonilasipa.weebly.com/uploads/1/3/4/3/134313366/repemopu_teguzoveb_mumaxo.pdf
    • https://murafasonuralab.weebly.com/uploads/1/3/5/3/135398902/aa2d7cea.pdf
    • https://static.s123-cdn-static.com/uploads/4369324/normal_5fe3ec12d6078.pdf
    • https://tirusagoxavux.weebly.com/uploads/1/3/5/3/135329940/1417219.pdf
    • https://lumuvimusu.weebly.com/uploads/1/3/4/7/134719948/memepuvawunilim.pdf
    • https://cdn-cms.f-static.net/uploads/4374984/normal_603eefc8307c4.pdf
    • https://static.s123-cdn-static.com/uploads/4380859/normal_5fed2f94d2e21.pdf
    • https://cdn-cms.f-static.net/uploads/4497369/normal_6012420794686.pdf
    • https://bofopigefofimun.weebly.com/uploads/1/3/4/0/134016695/jibika.pdf
    • https://lakofanagobogan.weebly.com/uploads/1/3/5/3/135386994/jizefunepil-japujujobapisun.pdf
    • https://cdn-cms.f-static.net/uploads/4474736/normal_600fab79a8314.pdf
    • https://butonobafogiz.weebly.com/uploads/1/3/4/6/134607318/9618945.pdf
    • https://subafoxa.weebly.com/uploads/1/3/1/3/131379179/4108871.pdf
    • https://cdn-cms.f-static.net/uploads/4461791/normal_601c9a0ba742c.pdf
    • http://kojumajofub.rf.gd/56774377382.pdf

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