Malicious PDF — malware analysis report

Static analysis result for SHA-256 e632e3d74e0493ee…

MALICIOUS

PDF

68.4 KB Created: 2021-09-11 20:26:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: e37c85fd5d9beaf748a6bdccbe7459e7 SHA-1: 3d7d986f027441eab64c4ad1afce2835d0192868 SHA-256: e632e3d74e0493ee4966fee2496a3bee4c551b6bd3a010edf2e2f1af7ccf25ab
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to numerous URLs, several of which are hosted on compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5224

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 http://sparkpro.lv/content/file/29099896824.pdf In PDF document text
    • http://ngor2-3.com/file_media/file_image/file/87795586347.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/8fb551257cb1dec8fc73a56fdac9c59e/71681180695.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1612f5bbb19fba---xiwuxumezapasuvidilofo.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161359e1bdb229---68034590041.pdfIn PDF document text
    • http://sqc.jp/user_data/editor/ckfinder/core/connector/php/upload/files/12371748252.pdfIn PDF document text
    • http://shrlie.com/upload_fck/file/2021-9-2/20210902190007867075.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133c77a7b411---sexaranupalivege.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/161361c1c62f29---gawemewobum.pdfIn PDF document text
    • http://buyyoutubecomments.com/ci/userfiles/files/pofik.pdfIn PDF document text
    • https://sowlindia.com/userfiles/file/kosuvudenubobisokizav.pdfIn PDF document text
    • http://bn-biz.com/userData/board/file/44342704162.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/248f85464901b62a556357b10646c56a/81050971985.pdfIn PDF document text
    • http://francescofesta.it/userfiles/files/29072545888.pdfIn PDF document text
    • http://mapect.com/upload/fckeditor/file/xinatedabinim.pdfIn PDF document text
    • http://scandirent-new.ru/uploads/assets/file/24961052618.pdfIn PDF document text
    • https://subarini.ro/mm/file/luzizuma.pdfIn PDF document text
    • http://cdseoulps.com/uploadfile/fckeditor/file/baxoxajodixev.pdfIn PDF document text
    • http://nextgenship.net/upload/file/20210902163056150952.pdfIn PDF document text
    • http://pension-erlkoenig.de/img/editor/file/24302633470.pdfIn PDF document text
    • http://falconartistmanagement.com/ckfinder/userfiles/files/rabopurulinaxatisozuxul.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/4ff52a555409f9f4e2c4d39bfe834349/lexatakunosabojerafefok.pdfIn PDF document text
    • https://www.asoriofrio.org/ckfinder/userfiles/files/lijowulopibaku.pdfIn PDF document text
    • http://lpxs168.com/filespath/files/20210910151529.pdfIn PDF document text
    • http://casaledellasignora.it/userfiles/files/gelajudibazubaramemid.pdfIn PDF document text
    • http://hotelniagararimini.eu/userfiles/files/96070540476.pdfIn PDF document text
    • http://bluecars.pl/userfiles/file/sovadoxinazoxokejemo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=64+rom+hacksPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e20c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE20C 17864 bytes
SHA-256: 3a619acddf81dc697beb7e53a89cad8cce55aee7e4f6999bc3d5f1d28045f130

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