Malicious PDF — malware analysis report

Static analysis result for SHA-256 82402bf27f5ab4b2…

MALICIOUS

PDF

62.3 KB Created: 2021-09-07 19:46:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 1854a2652f2637df3a689ec0314a6fd1 SHA-1: 6c3ab3ff50012c9fe45bdedeab97e1c4df036c95 SHA-256: 82402bf27f5ab4b2e878e9293ea5bdd9c6a9b2f21bfb21130d5e1c216e11ef20
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these links. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7260

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://crewmak.ru/uplcv?utm_term=free+reading+comprehension+worksheets+for+autistic+students PDF link annotation
    • http://hoadondientu-ptp.vn/images/ckeditor/files/45275154606.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a2a21ed054b---99413187674.pdfIn PDF document text
    • http://premiumcsp.com/uploads/files/36341350859.pdfIn PDF document text
    • http://kubablimel.pl/Image/files/kanozufukopi.pdfIn PDF document text
    • http://studiopignotti.it/userfiles/files/vitutemu.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/161313a5710590---rokewifezopabomiwekalano.pdfIn PDF document text
    • https://activepymes.com/pub/file/benokilesez.pdfIn PDF document text
    • http://ceraunavoltapizzeria.it/userfiles/files/pujikinogabufogozipe.pdfIn PDF document text
    • http://imhyuk.com/imhyukeditor/userfile/file/lomibowimo.pdfIn PDF document text
    • http://gabortech.com/admin/file/kodibotojojepe.pdfIn PDF document text
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/sr1lmr08eboeg576qlduvkgfc1/18415027659.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/16114134bc0942---12804792130.pdfIn PDF document text
    • http://airconbank.com/upload/fckeditor/file/89923393796.pdfIn PDF document text
    • http://alliance-ltd.com/userfiles/xukimikigisivavafitek.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160898d7d9223f---81642434782.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/2af6e3ea9b857c601204a6d9414c15b2/futaf.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609db4bb5c85c---17463315838.pdfIn PDF document text
    • https://yaslibakicisi.net/userfiles/file/42961325262.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/g74rh5atrgtk8bpbpma5ndut4q/futegenixujig.pdfIn PDF document text
    • https://la-klamm.org/userfiles/file/noposaliwuv.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d8afc3b45ae---46959278378.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160be546e31ba2---51426869712.pdfIn PDF document text
    • https://raiporjai.com/piceditor/file/vogokixixupejojije.pdfIn PDF document text
    • https://securityguardsupply.org/php/uploads/file/71814020536.pdfIn PDF document text
    • https://scalping.ir/data/files/file/zubijelonuvofebonuzagobot.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD431 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.