Malicious PDF — malware analysis report

Static analysis result for SHA-256 0465fac64e37695b…

MALICIOUS

PDF

41.5 KB Created: 2021-07-15 22:47:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: a9048e5cbd7a2105c27d5c68bb906db2 SHA-1: ae5405b0a0f1926bcd16c77c4ce39b7642c57932 SHA-256: 0465fac64e37695bb2c1673483a23bb0be3f83e2a8d06da214633d9b5d474083
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7341

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://oniceh.ru/uplcv?utm_term=group+name+for+jellyfish PDF link annotation
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/oem78osnkmf864fg0444ms4apl/43987888390.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/0c2749a6da934860433820a2e95d6acc/tupesapexatogenowifis.pdfIn PDF document text
    • https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/627eccc46f3f0dd519feab2dc6e28117/sodizuluv.pdfIn PDF document text
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082de3b82afa---ruwemupavex.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/cruo823cf9varcod1k3u5snp9l/46268557260.pdfIn PDF document text
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/5bdbb59a8d10e20f5ff9fe2b996fb84a/wojalowakapetax.pdfIn PDF document text
    • https://koncnc.com/genelresimler/file/60208791533.pdfIn PDF document text
    • http://landroverbh.com/ckfinder/userfiles/files/1833422135.pdfIn PDF document text
    • http://cattaneoarchitetti.it/userfiles/files/wonagazoratamemi.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/336719253b559745fa852c7ee04a7453/filugaponulezuledi.pdfIn PDF document text
    • https://mfdesign.hu/files/file/miduvawotabobifasoledesu.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aca3d6660aa---5534116957.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8db24ad76f---60068273729.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/40faeafec2797b5818b304969e6af7b2/868386539.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/47f7dcd1dacd26f7d57c0d10798184c7/dogare.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/79239432775.pdfIn PDF document text
    • https://weddingitaly.jp/images/file/weragara.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16088f01f2e940---79457314605.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a9672b8bcd6---73423485648.pdfIn PDF document text
    • http://serramentisiciliano.it/userfiles/files/daxavuson.pdfIn PDF document text
    • https://sinhadventure.com/uploads/file/3186133225.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/rajolarikevexalixa.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609c72512d162---70806112649.pdfIn PDF document text

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