Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e2c3b29f6c3efd9…

MALICIOUS

PDF

72.3 KB Created: 2021-06-29 14:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: bc9ec8821671b474190386d426bfcb86 SHA-1: 42f1ba6f273d666b1c236c268515bbb47b6784d9 SHA-256: 2e2c3b29f6c3efd9a477f08b6cebacea08360ecbf1043434cdc84aea4e0514ca
154 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress sites. The ClamAV detection and ML classifier indicate malicious intent, likely for phishing or distributing further malware. The document body is heavily obfuscated and unreadable, providing no direct clues to its purpose beyond the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6715

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 http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160aff4112eeb5---50005610361.pdf In PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a073de7426f---pagugin.pdfIn PDF document text
    • https://thekolkatapackersmovers.com/ckfinder/userfiles/files/60917764410.pdfIn PDF document text
    • http://aldara-latinoamerica.com/userfiles/file/37064348661.pdfIn PDF document text
    • https://biocoils.com/img/file/bulufajarajupa.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/wideroxuwibarulasuwiwi.pdfIn PDF document text
    • http://vako.vn/app/webroot/uploads/files/26776445122.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/3oikuph2tb6dn9uvaqap4eoi4v/4292421350.pdfIn PDF document text
    • https://eitmedu.in/ckfinder/userfiles/files/25061347009.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/trpb5mjcairrj8q1bk7j0g3dmp/82463090736.pdfIn PDF document text
    • http://pantryscan.com/123cars/imagefck/file/6584356404.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/zubewubokaxijumajajem.pdfIn PDF document text
    • http://chia4kids.ru/ckfinder/userfiles/files/robarupufukaredojebu.pdfIn PDF document text
    • https://travolution.travel/wp-content/plugins/super-forms/uploads/php/files/f0283fd2b7abe9750e7c25b1023655f3/dulifadavurikijukixesu.pdfIn PDF document text
    • https://campermagazine.tv/public/file/fakemel.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b404653251a---wugivoxigadufiwowozewalal.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a689cb25567---84476459422.pdfIn PDF document text
    • http://www.greenbriarpropmgmt.com/wp-content/plugins/super-forms/uploads/php/files/68bc40dee21e0cc5a2e271be017581a9/90632372804.pdfIn PDF document text
    • http://przychodnia-felinskiego.pl/uploads/editor/file/tukudimizegem.pdfIn PDF document text
    • http://74ahs.com/clients/2/2a/2a132ee8da0778863662fd4b1fa251ed/File/93920358031.pdfIn PDF document text
    • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/16090fec3d39cc---42530633098.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a75e94f593---pejevekofexibixutaka.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0838c81ef7---73761898430.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7f0639708---majozevazani.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=transformer+specifications+pdfPDF link annotation
    • 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_off0000ee1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1D 16968 bytes
SHA-256: 9e8f05c25559e769f9d94eff81be6364c34679a211b5857d038a2b481c1e1b5f

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