Malicious PDF — malware analysis report

Static analysis result for SHA-256 660065cd65c8acd0…

MALICIOUS

PDF

113.8 KB Created: 2021-07-21 01:03:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 2e5f14e1d5138171cff81b44e7da6000 SHA-1: b11c752cffd7178797f6f7b972a40622f60b34f9 SHA-256: 660065cd65c8acd05605f481b71a4423994d39de20c2c2c71bfd97ebb6f6d940
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is identified as malicious by ClamAV. Heuristics indicate it functions as a link farm, directing users to multiple domains, some of which are hosted on compromised CMS upload storage. The presence of numerous links, including those with UTM parameters, suggests an attempt to lure users to potentially malicious websites for phishing or further exploitation.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2685

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://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608763412e4de---nuvutedejemerajujin.pdf In PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/160d52e1756a4d---gobinumuluk.pdfIn PDF document text
    • https://privatecambodiatour.com/userfiles/file/wilibubetixaniduj.pdfIn PDF document text
    • https://gsacademy.ge/uploads/files/pibibiwav.pdfIn PDF document text
    • http://studiotecnicolamanna.com/userfiles/files/2489984128.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/01fbbc00bbbba2bf9393c3776a36037d/pepoxor.pdfIn PDF document text
    • https://stbenedikt.ch/userfiles/files/dirugu.pdfIn PDF document text
    • http://kipia-nn.ru/userfiles/file/wubotudexidositirowi.pdfIn PDF document text
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/35cfabfd9f09876fb1181751afec1149/8749794143.pdfIn PDF document text
    • http://poltinik.ru/userfiles/file/90219410223.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a6974a02536---85516917617.pdfIn PDF document text
    • http://learningkey.org/userfiles/xuzegevisamaboledixomir.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608ebdf924ee8---bodelinebokaxomized.pdfIn PDF document text
    • http://safires.cz/ckfinder/userfiles/files/99971327317.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160825693d8fbc---tupemulubazovizuvuzalife.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086ad8b3f801---nugiv.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608595e57f708---pujixozozugawi.pdfIn PDF document text
    • http://ilovehikari.com/uploads/files/daduda.pdfIn PDF document text
    • http://amuseonline.com/absite/userfiles/file/43544070470.pdfIn PDF document text
    • http://humanlitech.com/files/files/jebopuj.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093c63c0f104---vebiburokotajewusabok.pdfIn PDF document text
    • http://www.celso.org/download/menopokanesip.pdfIn PDF document text
    • http://clearspace-design.com/CKEdit/upload/files/vikadajejamusogubilena.pdfIn PDF document text
    • http://alrabbancapital.com/file/files/konofuleka.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/q1ai7q8i1lq7efd4o79fa55hni/1178201586.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609f441707ac3---gomumivasubuta.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076f2be18877---rowipegafuzibezo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=watergate+background+worksheet+answersPDF link annotation

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