Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc67d87d63268b96…

MALICIOUS

PDF

67.9 KB Created: 2021-09-03 02:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: ac79b043f3c42fb80d334c7670bb873f SHA-1: 3e8b23bc462538607020df1d733873a0f89a0570 SHA-256: cc67d87d63268b9655d3d6c285c79ca358960567a71858c7d2742a3d3502342c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites and are structured as a link farm. This suggests the document's primary purpose is to act as a lure, directing users to external sites that may host phishing content or further malicious payloads. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7247

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://krisoc.ru/uplcv?utm_term=ise+333+garbage+disposal+manual PDF link annotation
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c987a4291b---boguwadaxukobaxanopigubu.pdfIn PDF document text
    • http://rajskiewakacje.pl/userfiles/file/1634225356.pdfIn PDF document text
    • https://andrejc.si/files/file/12544266779.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/thtv5ermhe91kqm5mnlb473157/96292739353.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610c06c2d2120---xerofowupukipilegekixus.pdfIn PDF document text
    • https://dietacud.eu/upload/file/keriteminodalawuzalewifaj.pdfIn PDF document text
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab835910cf7---lojinijedafe.pdfIn PDF document text
    • http://zge-led.com/luodan/images/userfiles/file/sesikejexidazebepenepumi.pdfIn PDF document text
    • http://soundreaming.org/wp-content/plugins/super-forms/uploads/php/files/8705a3313431c7717e5948253d1c8c78/70061015019.pdfIn PDF document text
    • http://greenlivinggarden.com/htdocs/UserFiles/file/42265952647.pdfIn PDF document text
    • https://samudra99.com/contents/files/94843936988.pdfIn PDF document text
    • http://classtool.info/upload/files/pigapene.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/zevaxokad.pdfIn PDF document text
    • http://kup-vino.cz/web/ckfinder/userfiles/files/rujikabunurasoru.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084ca33338f2---91495424454.pdfIn PDF document text
    • https://numen-wow.com/userfiles/cloud//files/zazumegimebisigobuvuj.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/58c9bc6556db29aa1320c74784f866a0/36268154208.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/8lr8u87gl4caep4192pnn9m8i6/11228444292.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/6a38b6b5483d7d213aa801fca4668e8a/21803523274.pdfIn PDF document text
    • https://rkdestate.com/userfiles/file/fofelokegarimejudojopova.pdfIn PDF document text
    • http://hadt.vn/upload/files/15991751701.pdfIn PDF document text

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