Malicious PDF — malware analysis report

Static analysis result for SHA-256 017021662a12f802…

MALICIOUS

PDF

66.5 KB Created: 2021-09-11 13:43:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 262ea58e144723c96342dfd374dc8151 SHA-1: 2514d9f6a84d142a620d55392f512e13df63d7b6 SHA-256: 017021662a12f8023b937df32c1d3ae680fd009b4576766a0d6d33f5022d0839
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a phishing or spam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious sites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8294

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://crysiq.ru/uplcv?utm_term=mi+8+lite+android+11
    • http://sun-green.be/ckfinder/userfiles/files/33916453057.pdf
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136e254b6c5b---11495233681.pdf
    • http://yonseri.org/userfiles/files/sufuxepuko.pdf
    • https://www.vpn-solutions.com.pe/ckfinder/userfiles/files/towut.pdf
    • http://busto-wl.gattinonimondodivacanze.it/themes/userfiles/files/97149356790.pdf
    • http://apsons.eu/files/file/fijobopuvawotifanoxuw.pdf
    • http://www.sctiec.com/up_files/FCK/file/99186929216.pdf
    • https://fotokeramika.bg/userfiles/file/32514382426.pdf
    • http://jcpingie.be/public/files/wulodeberibogogojekariso.pdf
    • http://tingchucontrol.com/Uploadfiles/files/61196396081.pdf
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/vkamoqp7l66mdgdtttt4j4br6f/74659359604.pdf
    • http://xn--12cfu9bc1efac9a9azfdsb7b9d1f0j.net/ckfinder/userfiles/files/65289053757.pdf
    • http://gs-metals.com/filespath/files/20210909064957.pdf
    • http://adams-gold.ru/archive/image/file/46418687351.pdf
    • https://cuatudongsaigon.vn/uploads/files/bewetevamekogubumotuzuz.pdf
    • http://kursadowicz.pl/Upload/file/73505175962.pdf
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130d35135d9f---ginaf.pdf
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613b55a604f4e---5104299476.pdf
    • http://bamor.org/userfiles/file/larubedawupatutimikujo.pdf
    • http://ilovehikari.com/uploads/files/21932400710.pdf
    • https://discovery99.com/userfiles/file/11051834527.pdf
    • http://scard.vn/app/webroot/uploads/files/moderogogodekilebenovu.pdf
    • https://livresdarts.com/ckfinder/userfiles/files/96982092274.pdf
    • http://abnig.friendship-match.com/upload/files/tuwofubemejujutes.pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3fe.bin
277e648997d629a2754ad4cab2699bc079cc63375f1bf04ca03de641b5fc0f63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FE 10328 bytes

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