Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e6c8d5081d207a…

MALICIOUS

PDF

71.6 KB Created: 2021-08-13 17:46:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: c698dbf6b3e3787af9dc17e1d0eab109 SHA-1: 4e06fb40afc7ebc82a554626e658525c5867c19b SHA-256: 07e6c8d5081d207a2c3078b8c59f811e86a97c51615844e6553f143d99a69f7e
154 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs pointing to compromised websites and disposable hosting, suggesting it's designed to lure users to malicious content. The file's structure and URL patterns are indicative of a link farm used for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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://crysiq.ru/uplcv?utm_term=puntos+de+partida+11th+edition+answer+key PDF link annotation
    • http://lubrifianti-auto.ro/files/file/39027749672.pdfIn PDF document text
    • http://aryajob.com/user_upload/file/ruxegibavifaruvavep.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160b941414851e---68887860203.pdfIn PDF document text
    • http://jinanxintiandi.com/userfiles/files/kazogodaduzebisetosul.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f5cf873f97e---60661890892.pdfIn PDF document text
    • http://kleni.cz/userfiles/file/30677751839.pdfIn PDF document text
    • http://aj-logistics.com/stock/userfiles/file/48692191401.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/641b868a0dfbb1ccc16acf34ebd5b5d0/xotixapavuterudosabag.pdfIn PDF document text
    • http://karthikeyanjayaram.com/userfiles/file/kagosujibukot.pdfIn PDF document text
    • http://residencecarlofelice.com/userfiles/files/667667368.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160969e726f640---rabujikazib.pdfIn PDF document text
    • http://xn--vb0b83rba554gca.kr/page_data/file/20210508082321.pdfIn PDF document text
    • https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a33c3dee0b6---vokizaverurer.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/1f084e4ddc1e6b4568d8d5e2fb2f2e32/15422435241.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090ce0b925b5---6198088290.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/27583d0050e1ef276ecf7aab503083be/xikinosepuxumug.pdfIn PDF document text
    • http://kondicionery-krasnogorsk.ru/upload_picture/file/87499007466.pdfIn PDF document text
    • http://aurora-c.jp/files/files/81247489344.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609e9ac6419f2---susodotoperus.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/5fa93a4da63c29a3946b76915960bf15/98360632912.pdfIn PDF document text
    • http://austria-ex.com/images/blog//file/vomoxujigadabif.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607325dee59ea---64151599695.pdfIn PDF document text
    • https://investmentskillsgroup.com/images/userfiles/file/98879378269.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/e20989ec95c9d8687e6588b8de6c502a/busokawapade.pdfIn PDF document text
    • http://vector-mebel.ru/uploads/files/dobepewebitolugux.pdfIn PDF document text

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