Malicious PDF — malware analysis report

Static analysis result for SHA-256 9369febda9bcc254…

MALICIOUS

PDF

74.9 KB Created: 2021-07-19 19:02:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: dd078c82eba7f05ef95d4022e55b6093 SHA-1: 38afad2c26240379a82068f094122451e775ada8 SHA-256: 9369febda9bcc254ebdfb197e604e7f63d41e2dbee62a8692a416561e538940c
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and contains numerous links, many pointing to compromised CMS uploads. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, suggesting an attempt to obscure malicious destinations. The presence of external URIs and link farms strongly suggests a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4683

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ladue62.com/clients/2/2d/2d0487a90c18d3a1b3df44839405a665/File/vepivuxoxazin.pdf In PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9620fa63e7---goluru.pdfIn PDF document text
    • https://circolodelpistone.ch/userfiles/file/bumuges.pdfIn PDF document text
    • https://aydin-elektrik.com/resimler/files/69013907227.pdfIn PDF document text
    • https://mamo-tato.ro/userfiles/file/90520592394.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071fb6aa555c---pofemajubul.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/hkuvdcjqljmcto61gqgutoh7r7/83866243301.pdfIn PDF document text
    • http://ilovegabal.net/fckeditor/_upload/file/10930429072.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/6d76641c814978f784d7e6004afd52f6/35867525860.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160d20c683adcc---85368206046.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/b78031b4e5873abbd623f4e00f44c4ff/denidigumanaxonoli.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd0c8f8cd56---doratilifu.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/fc0652709abdfc4a3ab880551c8185f8/bakavapetekupivedug.pdfIn PDF document text
    • http://forresterfamilyreunion.com/clients/c/cc/cc72bfd2512333311cc1ef5a4fdef90f/File/gotexanonuvakakinilev.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/tnl8cb6t2km6lhvds6kodsfknf/budiforekeg.pdfIn PDF document text
    • http://skyline1968.com/clients/74864/File/18003893004.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c81f93b2d3---wimejawazazesizetimi.pdfIn PDF document text
    • http://cwesp.biz/upload/file/18512480746.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/c94d4187890271d9ed266d37d4ed69cf/99322434021.pdfIn PDF document text
    • http://ghalemdi.com/userfiles/file/77237855179.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d11951349c---sematizugojubomupojog.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/d3caa7cb85343b2c940767fe66f66f29/72992707580.pdfIn PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/67265546446.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/31eefef5fde1279b8d5bde6de345128c/67637436968.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=blank+coat+of+arms+template+printablePDF 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_off0000e3e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E0 10928 bytes
SHA-256: 8e389b871a8af7a4745fb43efeb8e72bb12abc18c057f594acd17ddd9a291c19
font_01_sfnt_off0000fcfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFA 17016 bytes
SHA-256: 8bd3e17c0218a6c64b33d52fdbc7972b4348c5dc605d3d6c32d8325800c464db