Malicious PDF — malware analysis report

Static analysis result for SHA-256 912285a0723f15a9…

MALICIOUS

PDF

41.5 KB Created: 2021-06-27 11:45:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5ce8df6860a9f03dd9e55f6b935dfec3 SHA-1: 1f352c60929da79d578ad6fe7ea7b39b43fe80de SHA-256: 912285a0723f15a9c5dc340891783c745760fbe535f26c8c745254c6480a9ae1
174 Risk Score

Malware Insights

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

The PDF contains an image lure and numerous links pointing to compromised CMS uploads and disposable hosting, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. No scripts were extracted, but the document structure and embedded URLs are indicative of a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8134

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 http://allseasonsart.com/uploads/fck_uploads/file/46230719226.pdf
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160ac221214d8c---18021138985.pdf
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a4d1d5323c8---196302718.pdf
    • http://wenxuezj.com/images/File/16423349818.pdf
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606d95ec7d988---95687924197.pdf
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160722e37b4918---rulat.pdf
    • http://jagodkaprzedszkole.pl/userfiles/file/85724436420.pdf
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/6rq0eflvnrggck2358l557nldk/87554354593.pdf
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/5f49984aaa5025dc976ec307443e4780/91188651205.pdf
    • http://spalovnachemolak.sk/userfiles/file/wigutulefisufirofiguwali.pdf
    • https://banktapeunadana.com/tapeunadana/bank2/admin/userfiles/file/wujaref.pdf
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a923852b35c---boxasogujadoko.pdf
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c47a3257c1c---16752106785.pdf
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608cc4082fb30---99319874890.pdf
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/afeca6b9c279beee9d20f8676e032cb1/nabagojajobi.pdf
    • http://syuncyoku.jp/upload/file/92214395099.pdf
    • https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/160745f67536d4---modetowu.pdf
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607447a81e881---3015301164.pdf
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/uouqk9stu2rtjap7gs1aclnet7/70583329852.pdf
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160a18aacb2901---wuxem.pdf
    • http://andlupa.com/userfiles/file/zamibokexivatifexiki.pdf
    • http://chiangmai-clean.com/user_img/files/tedipukogilagajabu.pdf
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/eoc1tt1l4fco01ah65f298t1g0/fixejugoroviseduxajuvuras.pdf
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a35ff21220b---kufujuvejorenasomugatopef.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=cell+structure+and+function+test+answer+key

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