Malicious PDF — malware analysis report

Static analysis result for SHA-256 d52037cc14105d02…

MALICIOUS

PDF

42.8 KB Created: 2021-09-23 12:09:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4a8ad5a275f9dbb6c45c6cb14a8fe68c SHA-1: 4b693b3ece2c8e0392d980690444cae5946bf30e SHA-256: d52037cc14105d02f84b476c31ace5121620daff029d1c27b91b5496ba47e672
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as a phishing lure due to its image-only nature and embedded clickable links. The heuristics indicate it's designed to resemble a legitimate document, likely to trick users into visiting a compromised website or downloading a payload. The presence of numerous links pointing to various domains, some of which are associated with compromised CMS uploads, reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5896

Heuristics 6

  • 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 42 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://robert-zauer.cz/userfiles/file/11637821796.pdf
    • https://giridhareye.org/ckfinder/userfiles/files/zisakejavijatadororobi.pdf
    • https://taiwan-tiaya.com/upload/tiaya_official/files/47198254961.pdf
    • http://www.peritaonline.es/ckfinder/userfiles/files/luxovaket.pdf
    • http://forter.vn/hinhanh/file/jufaxerefefedibabotewofet.pdf
    • https://gad-elhak.com/userfiles/file/69228279393.pdf
    • https://bc2000.order-pro.com/ckfinder/userfiles/files/xibirugevomugorejopofi.pdf
    • https://7mark3t2-7aya.com/contents/files/31786193532.pdf
    • http://virtuozi.ru/sites/all/sites/virtuozi.ru/files/71976311593.pdf
    • https://vandolderskb.com/images/usr/63541765225.pdf
    • http://exhibitionchannel.com/upload/wuxugozitisonusugezowuze.pdf
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bd34706cce---vupux.pdf
    • http://factblogs.com/uploaded_files/userfiles/files/sejaluzoku.pdf
    • http://ayurveda-shiatsu-nice.com/upload/files/92574792450.pdf
    • http://hangtatmj.com/userfiles/puxiwexekupabed.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/161402f640fca9---zopobomo.pdf
    • http://geometrarontani.it/userfiles/files/kosikos.pdf
    • https://robindayne.com/ckfinder/userfiles/files/84828431867.pdf
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/f2i9s8sk1nfomjahdrh6vpvr97/22624859587.pdf
    • http://stroykap.com/application/views/stroykap/userfiles/file/zewabozadijozufujazurosar.pdf
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/c8b33iri572lu0gsnvf4p5lim3/nadopomujabakefebenipevit.pdf
    • https://luxm.pl/userfiles/file/62037664224.pdf
    • http://thietbidienmpe.net/upload/files/nakomigajif.pdf
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/p95upcr3aghev6g4hj76p1a6ug/49029375959.pdf
    • http://ferrogep99.hu/static/media/file/tobixojelulenemamukuxub.pdf
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613fedf2999b7---fidamozomoj.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=how+to+delete+photos+from+lost+android+phone

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