Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a993412d68d6a83…

MALICIOUS

PDF

62.3 KB Created: 2021-09-01 14:15:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 0ff1677805fd1b83845dd0f31511dcdb SHA-1: 336aca72cff803318328029588c6addd707d3513 SHA-256: 2a993412d68d6a83b21a3c0f24b97cf56ba050fbe5c58f0e8ef36187e752ebf8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to potentially compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URLs are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9617

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/dd9p61kj7c5jc5igu2h2am8v80/vopiwapesegubupuzujodiz.pdf In PDF document text
    • https://guptajimarriagebureau.com/userfiles/file/saxakemugifenewiwitata.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083d7cd24ff2---84020018701.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/732873f3f9f1fe8be026e0ad4ac868a4/debisatawop.pdfIn PDF document text
    • http://atthaya.com/file_media/file_image/file/virizisakibixuvegopow.pdfIn PDF document text
    • http://greenplanetnepal.com/userfiles/file/fasiwigivudebojanoku.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/1pvl61ujo5mnpdcvg331t81ql4/pikibilisefuriribojevef.pdfIn PDF document text
    • http://ibiforstarlight.org/clients/3/3c/3cfcca4e360ca8807b7dd7d6e7cbeae0/File/95239815153.pdfIn PDF document text
    • http://studiofantino.it/userfiles/files/febopom.pdfIn PDF document text
    • http://daotaoyduoc.org/wp-content/plugins/super-forms/uploads/php/files/avdc6li2rh6aqrulbr7bot86ib/tesowuzewuxusajegigo.pdfIn PDF document text
    • https://universitecentrale.net/uploads/FCK_files/file/wupobejisugeme.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/b26a71feb585f39349ea3b05d4cd64d8/14794692426.pdfIn PDF document text
    • http://oasis-inwaste.asia/files/file/wirikegiredameragez.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16090ea7157a23---66950177249.pdfIn PDF document text
    • https://maintogelonline2.org/contents//files/82185285147.pdfIn PDF document text
    • https://nasroglobal.com/userfiles/file/83015388710.pdfIn PDF document text
    • http://clinical-pain.com/pds/userfiles/files/xekigazinonukag.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//40642896142.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/a040e6128a8d65c37405f5a9307d1146/29857549439.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090e73ed3d78---sumini.pdfIn PDF document text
    • http://limuzine.md/userfiles/file/zonoxajasudokoxapese.pdfIn PDF document text
    • http://westleyden72reunion.com/clients/4/46/469dc9162705cbff2d1fbe132f144f37/File/25031985663.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=free+crochet+pullover+sweater+patternsPDF link annotation

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