Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2208e9b9042fdb3…

MALICIOUS

PDF

67.8 KB Created: 2021-09-07 10:45:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: d3073d659645d0608353bab764fa1b01 SHA-1: fa5552e17ca5f31d09e823c1864e0b5d54854a5e SHA-256: c2208e9b9042fdb3e89f39640a613b98f187627ac544f16ef734e29f8f8038d6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7110

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://colegiumaniucarei.ro/ckfinder/userfiles/files/visezezex.pdf In PDF document text
    • http://www.alexgis.com/siteuploads/editorimg/file/vozopibukemo.pdfIn PDF document text
    • http://rallyteamwalraven.nl/file/ropavutokefifi.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/e7134418b9bec8198291559fe241a2a2/retorovimepedot.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/r725igpequ3b7c0eu496e4c6g3/51259856416.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/16105e2c531e4f---mofusexeleraxenekerijaki.pdfIn PDF document text
    • https://eurosan.pl/user_images/file/8218019691.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/160db980154733---18729005802.pdfIn PDF document text
    • https://onlinendttraining.net/files/43318360874.pdfIn PDF document text
    • http://napiarsaigh.com/images/milofisijabu.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab52569eb35---nusuxasiruwewug.pdfIn PDF document text
    • http://www.deep2001.com/images/library/File/68216493837.pdfIn PDF document text
    • https://gsacademy.ge/uploads/files/54352510014.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/635879d0d00075425d861b86bc268b54/jerozelotaxagaxokaru.pdfIn PDF document text
    • http://www.greenfield-sustainability.com/images/files/demukeligazo.pdfIn PDF document text
    • https://impulsa.mantareys.net/uploads/plantillas/files/zifebuda.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/ic9uvniqc6tc1pv0bhrsi94790/80262913097.pdfIn PDF document text
    • http://productosole.com/wp-content/plugins/super-forms/uploads/php/files/65n2cfeblvjcj29b6u6mdh92ko/29455946272.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/fea6c149a4f999df5da5fb812a353dee/vixopeti.pdfIn PDF document text
    • https://haidangpc.com/contents/files/sipixubapet.pdfIn PDF document text
    • https://chungangroup.com/uploads/files/202108131029554838.pdfIn PDF document text
    • https://legouic-peinture.fr/userfiles/file/30721153741.pdfIn PDF document text
    • http://bungefamily.com/clients/5233/File/xerabadab.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af23385db10---72407667418.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/cc62390f87626123cdd6983a4e67825b/35407137615.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=retail+banking+services+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fad9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD9 11016 bytes
SHA-256: f505b42c96a3d71c1e0918885fa5081a5907e3734b543f700bcb1a8d00fb6dfe

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