Malicious PDF — malware analysis report

Static analysis result for SHA-256 1702d274749651ec…

MALICIOUS

PDF

68.4 KB Created: 2021-06-19 06:03:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fdae4a2e16d4c4f4048b2a09cec8fad5 SHA-1: 6c7e2c0405287c9fc2e516031c09320b8d361a05 SHA-256: 1702d274749651ec9203cbd5258d69e4da6602fd23ee3b2d753ed300fdb56da5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the extensive use of external links points to a watering hole or phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8336

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://ketchas.ru/uplcv?utm_term=characteristics+of+third+world+countries+pdf PDF link annotation
    • https://www.surajinformatics.com/wp-content/plugins/super-forms/uploads/php/files/9d7d4bc96063e071560219a3e1b33977/84818543571.pdfIn PDF document text
    • https://scriptdd.com/_file/file/jaxifevidipovirimidiwebi.pdfIn PDF document text
    • http://bmsorganica.com/userfiles/file/1025605037.pdfIn PDF document text
    • https://q-web.ro/wp-content/plugins/super-forms/uploads/php/files/ernlm1d1295ljobn86r53h737r/19802744191.pdfIn PDF document text
    • http://luckdidea.com/ckfinder/images_store/files/85880428862.pdfIn PDF document text
    • http://yonseri.org/userfiles/files/ruwakafezazisoxunisex.pdfIn PDF document text
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160744b47b3d05---35185033923.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/48963072b0740c1a9ae50c5bf46ffcb1/37429122089.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1609ebe55910ff---4604688691.pdfIn PDF document text
    • http://kovove-ploty-brany-zabradli.cz/UserFiles/File/wejidubuwi.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/a67a8be06e6939e7ac97a5d922203260/guvijanumed.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/160868a2825800---25988485407.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/c56b860482098f19c398a631333300d0/94478042120.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cf008c974b---xiwizesugexodedawariru.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/2t6prnnm9adopeep1ipjsp1en2/gogujalo.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097c5b3e8f15---zuzisopufeme.pdfIn PDF document text
    • http://vasvaripalmuzeum.hu/upload/file/xomulufovorow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0C 5240 bytes
SHA-256: caf413fcfed8f9be5bbe703c7efe6d9a232068bc88ab99cff97f7928a8cbd213

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