Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa950476b6802fad…

MALICIOUS

PDF

52.6 KB Created: 2021-09-04 04:38:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 9d8d5394de6d9e6d9d44d5108089811d SHA-1: ccd2c4d74998927a4d849088ff3c14ce909c08cb SHA-256: aa950476b6802fadc1482402c43b98daf358f386de3fa750604f11b8a1e4659a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to numerous other PDF files hosted on various domains, many of which appear to be compromised WordPress sites. The presence of multiple external URIs and the nature of the links suggest an attempt to manipulate search engine results or distribute further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6843

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://living-stone.lu/userfiles/files/59073758685.pdf In PDF document text
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/1a75fba77e762249a490a6e038fb3798/regenemejozawajodizibo.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16079ca68cedba---katapetevujigo.pdfIn PDF document text
    • http://kimkhimientrung.com/uploads/image/files/38061778965.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/12f2d23cee43c57e74ab8c4559124ec7/15607304740.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/3f144458565b748a4705a29d0cc2b19a/11371638512.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16072517150301---vunasini.pdfIn PDF document text
    • http://abwingssuffolk2.com/uploads/files/11837261072.pdfIn PDF document text
    • http://bbmpva.nl/fckassets/file/18443595252.pdfIn PDF document text
    • https://primer-spb.ru/files/files/60348338615.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/16077e375a8dfe---setigubefosa.pdfIn PDF document text
    • https://izometal.net/mm/file/mafafexod.pdfIn PDF document text
    • http://brilsports.ro/userfiles/file///xegalakakovumunuvugijex.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/05hm56025ops1kjs0hdjiqhb73/famogapizevefer.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160befc670cacd---79593640438.pdfIn PDF document text
    • http://taiwan-tsai.com/upload/files/33166076629.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160d080491777e---kekeselogakodopizi.pdfIn PDF document text
    • https://pointvirgule.ca/upload/editor/file/bemebubezalotujunozige.pdfIn PDF document text
    • http://tpdw.pl/userfiles/file/10930679832.pdfIn PDF document text
    • http://evola.it/userfiles/files/lebojoba.pdfIn PDF document text
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607577c72a0bd---74681912495.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093d45da3017---zixaloder.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=pembagian+warisan+menurut+islam+pdfPDF link annotation

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