Malicious PDF — malware analysis report

Static analysis result for SHA-256 615daad4f37255fe…

MALICIOUS

PDF

50.6 KB Created: 2021-02-14 12:31:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 17da0befec6eb9442c9f44951e17c099 SHA-1: 25150c14cb5482f3cd4b101cec972347e6bfa019 SHA-256: 615daad4f37255fe2ee6190290f3efe026b9264842be700c8c8c697534fa9e58
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, many of which are associated with link farms and disposable hosting, suggesting a phishing or malware distribution scheme. The ClamAV detection and ML classifier further indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7515

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/aws?utm_term=apache+spark+2.+3 PDF link annotation
    • http://mkr-olimp.info/amulya_jeevan_823oqsgk.pdfIn PDF document text
    • http://iclod.tech/ganokeromuvuvetorejinux0oxf7.pdfIn PDF document text
    • http://gayerkan.com/kuvogarupibotp10ng.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370087/normal_5fd7cdb2bdc90.pdfIn PDF document text
    • http://contentmedialiteracy.com/saver_reposter_for_instagram_apkza092.pdfIn PDF document text
    • http://bloodcraft.online/super_funny_annoying_orange_videosbrkz0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417653/normal_5fe0d6e4f0251.pdfIn PDF document text
    • http://temppicture.xyz/32585647436lfpgu.pdfIn PDF document text
    • https://marikikugawu.weebly.com/uploads/1/3/5/3/135326377/93e6c.pdfIn PDF document text
    • https://zudobusida.weebly.com/uploads/1/3/5/3/135330479/8793709.pdfIn PDF document text
    • https://nivujetomut.weebly.com/uploads/1/3/4/7/134753784/522c7b87.pdfIn PDF document text
    • http://poposumezaxek.rf.gd/asphalt_9_invalid_license_android.pdfIn PDF document text
    • http://xibubew.epizy.com/59382611672.pdfIn PDF document text
    • http://takerowul.epizy.com/96197366707.pdfIn PDF document text

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