Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb4d4dee2eca911d…

MALICIOUS

PDF

64.2 KB Created: 2021-09-21 18:30:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d2205d466006bce9a9d5c9cc9a73f2ca SHA-1: 94c2c24b45de53ea33f73c34660f71a63e812619 SHA-256: bb4d4dee2eca911d0286110d97ee1d74f0c90b4e396fe4dd17c3bb6f469ad46e
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file contains embedded JavaScript and is identified as a PDF link farm pointing to potentially compromised WordPress upload storage and other disposable hosting. The presence of embedded JavaScript suggests an attempt to execute malicious code, likely to redirect the user to external sites. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4986

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://performanshost.com/calisma2/files/uploads/vowexuwuwigakuzoz.pdf
    • https://philly.drinkpoint.com/uploads/files/joperodopeluwu.pdf
    • http://cngwalk.com/fckeditor/userfiles/image/divigopewopabutu.pdf
    • https://5of7edwardstreet.com/assets/media/files/25002063354.pdf
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/161356f8f0fd71---rinivuguselil.pdf
    • http://aptekainternetowa.net/_mdm_apteki/file/pemewiketuvesiwafulapogig.pdf
    • http://ibsdhc.hpds.work/ecdemo/web/js/ckfinder/files/files/28301528324.pdf
    • http://gestaocipa.com/public_html/Imagens/file/difiruw.pdf
    • http://ylgems.com/file_media/file_image/file/41151582662.pdf
    • http://dentalclinicbangalore.com/uploads/dufekabexinez.pdf
    • https://askisan.com/upload/ckfinder/files/xulelovemawukutef.pdf
    • http://xn--vb0b83rba554gca.kr/page_data/file/20210914105522.pdf
    • https://mamalight.net/business_school/uploads/file/56498679505.pdf
    • https://jagominum.com/contents/files/dubexegorususilikukegu.pdf
    • https://alcc.c-zentrix.com/ALCC/mail_attachments/multitenant-ws-01/1/1631606837.pdf
    • http://loaamtran.com/files/usersfiles/files/rorafam.pdf
    • http://gold-carsales.com/js/upload/files/fezukusoz.pdf
    • http://namthangbasaltstone.com/uploads/image/files/19061566284.pdf
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/6b971d1fe208f3d0789ade62f19a928b/begepugigi.pdf
    • http://ultraljud.nu/bild/files/maporoto.pdf
    • http://ceramkgres.ru/userfiles/file/gixonegu.pdf
    • http://tsutae-f.com/js/upload/files/fipopebojodamusesegabed.pdf
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613f51e69f586---fizubus.pdf
    • http://irinaburmistrova.ru/files/livorivuke.pdf
    • https://chsins.tw/uploads/files/202109020106214626.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=show+my+passwords+on+my+phone

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