Malicious PDF — malware analysis report

Static analysis result for SHA-256 96718f43c76f9d3d…

MALICIOUS

PDF

64.0 KB Created: 2021-08-17 02:27:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 72cb92de35a82dd689e691375d3d3481 SHA-1: b48bd8a56b0aec6fbe8632453b6768999335d764 SHA-256: 96718f43c76f9d3d9e9a628b5deb3fc01359943e36f5800fd3bffb2d082b35a7
154 Risk Score

Malware Insights

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

The PDF document contains numerous links, many of which point to compromised WordPress upload storage or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8494

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://mpksieradz.pl/upload/file/67341954675.pdf In PDF document text
    • http://dztechfin.com/upload/file///26840388341.pdfIn PDF document text
    • https://clinic4lab.com/upload/ckfinder_temp/files/20210703161810.pdfIn PDF document text
    • https://people11people.com/uploads/File/47734486429.pdfIn PDF document text
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/a29c09499f8e5f7e69aa276ecbb73990/zadenagadok.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096212607cd8---72573990736.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16081d1eb5d566---97591540092.pdfIn PDF document text
    • https://szabobuszrendeles.hu/files/files/92339618592.pdfIn PDF document text
    • http://keletunderground.hu/images/uploaded_pics/file/wogogujogibaxemubexovalu.pdfIn PDF document text
    • http://ithaca1966.com/clients/8/85/85e9e0a76fddb83d7689cebc6ab07fae/File/gavuxudidoxorujo.pdfIn PDF document text
    • http://awkontrakt.pl/ckfinder/userfiles/files/jetulexewazotegoluzep.pdfIn PDF document text
    • https://bestrecycledautoparts.net/images_i/file/59890845406.pdfIn PDF document text
    • http://geriatriccarenewjersey.com/userfiles/files/41823333533.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609e48ff6a5d0---junavim.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9f9bb0bce7---58840221092.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160b0144a81204---75549211875.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/1610af1410c9c4---27756908482.pdfIn PDF document text
    • http://franzoesischebulldoggen.eu/userfiles/file/wozerifekilug.pdfIn PDF document text
    • https://coil.hk/upload/files/nudevaloxovisewan.pdfIn PDF document text
    • http://boldino-hotel.com/ckfinder/userfiles/files/bilorilejezij.pdfIn PDF document text
    • https://ms02bet.net/contents//files/39547314700.pdfIn PDF document text
    • http://cn-noah.com/uploadfile/file/divobejimasafuwavonaxu.pdfIn PDF document text
    • https://proxus.nl/file/kiwejepuzitunufur.pdfIn PDF document text
    • http://albatrossmrn.com/konadnew/userfiles/file/35364024651.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=que+aplicaciones+tiene+la+ley+de+coulombPDF link annotation

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