Malicious PDF — malware analysis report

Static analysis result for SHA-256 125804aeb22d9997…

MALICIOUS

PDF

85.9 KB Created: 2021-06-23 02:29:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6cbfc03c72eb2bf6c5e51af3121b1e1b SHA-1: 4094e3719c29ed3833e3edb2dacbb4c33f7e5223 SHA-256: 125804aeb22d99979bef0fc7b9826f5085b33670171af6504c2bc6a75ad719f6
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised websites, indicating a link farm designed to redirect users. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classification yielded a high probability of maliciousness. The embedded URLs suggest a phishing or malware distribution campaign, likely delivered via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8955

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://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609821668ff2c---67684970626.pdf In PDF document text
    • http://webcertain.net/contentupload/fckeditorUploads/organization_/file/zijagumenetewin.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce7069f4e6---molisosujisenomiwubagefu.pdfIn PDF document text
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/afbf54f47f3366b7a469dc4b499785a7/73075679454.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/zanetevomewijuvu.pdfIn PDF document text
    • http://eska-lift.ru/userfiles/file/patilelireb.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075ed9878bc6---vexasomu.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081fa60b7cc7---72690787121.pdfIn PDF document text
    • http://alibabashipping.com/userfiles/file/40384533300.pdfIn PDF document text
    • https://melz-feu.ru/upload/nisijudifiwukudapepigulu.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/eaa1566908cbbc4b04dc0795a48c1468/24752374085.pdfIn PDF document text
    • http://animalscipublisher.com/files/upfiles/file/pevidu.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/66517f444552ff9f972bd0da02a4fae3/23884376724.pdfIn PDF document text
    • http://gezond-trakteren.nl/kasteel-doornenburg-img/bestandenfile/jofutefewiledaraz.pdfIn PDF document text
    • http://ankaser.com/userfiles/file/915231276.pdfIn PDF document text
    • http://naturalmis.com/userfiles/file/jilozibufege.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/93781c397894eeaa490567c2ea532f4a/57945355426.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=dmos+soudage+pdfPDF link annotation

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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