Malicious PDF — malware analysis report

Static analysis result for SHA-256 62b812284bf378e0…

MALICIOUS

PDF

73.4 KB Created: 2021-09-03 18:45:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 4c5d6d2f45b58a156a2b23fb83992426 SHA-1: ddfb101feaad50503650e885a566c371edfadddf SHA-256: 62b812284bf378e093ec8091f6a79d951c24696c13c7639433a09032837aae90
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier further indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, and the document body was unreadable, limiting the analysis of specific payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7166

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://belhasasecurity.com/userfiles/file/fabuputoworerefizuk.pdf In PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/16079375ddc8c1---bisosove.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/rusipagibidi.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608a21fba7aae---nabexasavafenepitev.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/3f6fe0f6a7ef8bd22d5b60357dde7c76/gosimudimuzasogaginirik.pdfIn PDF document text
    • https://limadelimon.com/images/file/fojumivezumarubeke.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2ccb63c8b---92537270869.pdfIn PDF document text
    • http://koddous.com/userfiles/file/29175787783.pdfIn PDF document text
    • http://xn----8sbemnkjd7bfu.xn--p1ai/design/img/upload/file/renekinizorizevivisibiw.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2dd2fbd2b1---konemutakoxefe.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/160d93a4402a12---60038199556.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/0ltr8r38mmb1jkhk67ie9amkkt/79460662394.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/65fa5b4eacac610a6c730e5166aab34d/guvaguvi.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/fb4222f38deaac1cc35cdef525d9fa19/lumupireseposulezawi.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16078091c6fcc3---pijezolekega.pdfIn PDF document text
    • http://hzaidele.com/images/upload/File/rirukemenoruja.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/aebbb2218d80e8e216953f5a30a9c1f6/88510331546.pdfIn PDF document text
    • http://ecohort.com/userfiles/files/bewulujipigoluku.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/sirijukuzobig.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608b808bc0165---jabitoju.pdfIn PDF document text
    • http://straps.by/ckfinder/userfiles/files/noxaduxolari.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=2013+highlander+service+manual+pdfPDF link annotation

Related samples 8

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