Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce83d7888c3b216d…

MALICIOUS

PDF

54.6 KB Created: 2021-09-23 01:49:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 21bdc0467dd374cbb866358f213600f1 SHA-1: 4b170cfdddef8bfeebe4c63f00bdfc086e7a796a SHA-256: ce83d7888c3b216d10758e2074dd95e2839f502e12bc978448784d332393f0f4
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as a phishing trojan by ClamAV. Heuristics indicate it functions as a link farm, with numerous embedded URLs pointing to potentially malicious content. The document body is heavily obfuscated, suggesting an attempt to hide its true purpose, which is likely to redirect users to malicious sites for further compromise.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4439

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 http://studioesflores.pl/obrazy/file/32080358491.pdf In PDF document text
    • https://warungmimpishio.com/contents/files/64288410990.pdfIn PDF document text
    • https://demircanticaret.com/userfiles/file/zuvutafutorotelidebu.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/98623769926.pdfIn PDF document text
    • http://acsalma.hu/userfiles/files/46979858290.pdfIn PDF document text
    • https://stancijanegrin.com/userfiles/file/tetefiw.pdfIn PDF document text
    • https://pjkconstruction.ca/images/file/21947776665.pdfIn PDF document text
    • https://santa.sg/images/users/00000000/files/48920694236.pdfIn PDF document text
    • http://fivelscope.net/fckimages/4280803896.pdfIn PDF document text
    • http://the100voicesofgospel.ch/fichiers/newsletter/file/42583087466.pdfIn PDF document text
    • http://ifaistos.reality.gr/~triantaf/images/file/87744126074.pdfIn PDF document text
    • http://liily.jp/upload/file/20210911225713.pdfIn PDF document text
    • https://economiadecomunion.com/ckfinder/userfiles/files/zunumazeduvax.pdfIn PDF document text
    • http://www.beverburcht.nl/upload/files/61964091266.pdfIn PDF document text
    • http://leaguengn.com/userfiles/file///jevofezexipije.pdfIn PDF document text
    • https://ebal.ro/app/webroot/files/userfiles/files/folaxigigebotedofe.pdfIn PDF document text
    • http://excitechem.com/userfiles/file/42040951578.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/2e26f30eb6021a1a9947c187f57b62b6/9169632845.pdfIn PDF document text
    • http://cn-daomeng.com/upload/userfiles/files/13398627d82ad04ef69d902829b518e3.pdfIn PDF document text
    • http://ansing.nl/userfiles/file/lagabelolubomedawe.pdfIn PDF document text
    • https://sunpower.lv/ckfinder/userfiles/files/foful.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613cf54c5dd0e---69225680562.pdfIn PDF document text
    • http://congseng.com/uploadfile/files/mawasekuker.pdfIn PDF document text
    • http://gazetavk.ru/img/file/81608361000.pdfIn PDF document text
    • http://ingegneriarossi.it/userfiles/files/xixufadut.pdfIn PDF document text
    • http://architettotamborra.eu/userfiles/files/93125100454.pdfIn PDF document text
    • http://zenobiacultura.it/userfiles/file///23078205706.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=half+of+a+yellow+sun+book+pdfPDF link annotation