Malicious PDF — malware analysis report

Static analysis result for SHA-256 62347d62abb55574…

MALICIOUS

PDF

69.3 KB Created: 2021-09-12 19:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: bf176eb0e21041dffcd6a62494a1d3ca SHA-1: b87e3847481171154fe97b560da5f871646f07a5 SHA-256: 62347d62abb5557485bb9cb82c281e443557da79a409b5eec797e2ad788c88ae
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected by ClamAV as Pdf.Phishing.Trojan. The PDF contains a link farm pointing to numerous domains, many of which are hosted on disposable or potentially compromised CMS upload directories. This suggests the document is designed to lure users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.2445

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://smsalumni1971.com/apadmin/uploads/userfiles/files/69175413198.pdf In PDF document text
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1613c721a04a7b---35305734174.pdfIn PDF document text
    • https://kme.pl/global/app/webroot/uploads/file/16305516913482.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613decd5b70bc---52105591585.pdfIn PDF document text
    • http://ilink.pl/userfiles/file/sifojije.pdfIn PDF document text
    • http://crabandclaw.com/uploads/files/bajojavenovebaj.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16133e2dbd536a---57446657645.pdfIn PDF document text
    • http://mobilenmr.com/files/files/60012654819.pdfIn PDF document text
    • https://thefertilizerequipment.com/d/files/jevipigataguzorapu.pdfIn PDF document text
    • https://digicpictures.com/downloads/61633462520.pdfIn PDF document text
    • http://lingeriedediva.com/UploadFile/file/2021091010485373499.pdfIn PDF document text
    • http://gonganmi.com/userfiles/file/gopitejaxonijij.pdfIn PDF document text
    • http://travelspace.pl/userfiles/file/poxufuzo.pdfIn PDF document text
    • https://beautyyaurient.com/editor_upload/file/ribixutarapoxokarofad.pdfIn PDF document text
    • https://lecormier-menuiserie.com/www/upload/files/58770446002.pdfIn PDF document text
    • http://interroadholland.nl/userfiles/file/22147667684.pdfIn PDF document text
    • https://webornate.com/viking1/uploads/files/63187175786.pdfIn PDF document text
    • https://aczv.fr/userfiles/file/33638950548.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ac6cf784b3---koluvenegexe.pdfIn PDF document text
    • http://thanglong.vn-greenenergy.com/ckfinder/userfiles/files/96079692530.pdfIn PDF document text
    • http://hoteldarim.ir/basefile/hoteldarimir/files/papejezefejifupofovediwi.pdfIn PDF document text
    • http://midesignvn.com/uploads/files/munisire.pdfIn PDF document text
    • http://anpo.vn/upload/files/62200870029.pdfIn PDF document text
    • https://detskeihriska.eu/ckfinder/userfiles/files/vinipejedodipudexudalojo.pdfIn PDF document text
    • https://www.aifimm.it/admin/inc/ckfinder/userfiles/files/rataxavuxalefalivalelatek.pdfIn PDF document text
    • https://its-bulgaria.bg/files/file/tenarejobarorari.pdfIn PDF document text
    • https://amzentransportationindustries.com/admin/imagetemp1/file/35411677241.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=apagar+arquivos+temporarios+androidPDF 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_off0000ddea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF601 10984 bytes
SHA-256: a974dbb8f8a7e914349c1f9abd844a6f5e81fa23893fae343ab209e55f89caaa