Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cdaa3b996257073…

MALICIOUS

PDF

85.9 KB Created: 2021-09-04 01:09:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 33acff09b1ff7042a42960c2a44537fc SHA-1: 5de790ca8bbc1a637e4dee6fca1e89a7efa645dc SHA-256: 0cdaa3b99625707357d694cfbaf4e0b6c3af2896f4b4364b551fae1e1493db04
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code or redirecting users. Several heuristics indicate the PDF is part of a link farm hosted on potentially disposable or compromised domains, suggesting a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5375

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://massiimo.com/piceditor/file/32580027261.pdf In PDF document text
    • http://edwardlankin.com/clients/86087/File/basax.pdfIn PDF document text
    • http://aptwash.com/userData/ebizro_board/file/ximenewewomiri.pdfIn PDF document text
    • http://hutergroup.de/userfiles/file/gixexama.pdfIn PDF document text
    • http://tysons-cafe.com/uploads/files/maponirobawugilibux.pdfIn PDF document text
    • http://ashioke.com/images/library/File/63856852717.pdfIn PDF document text
    • http://locum-system.pl/userfiles/file/jumapitufonusorov.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/11b0d9f8b0e83df472f5b76f57891693/43707253693.pdfIn PDF document text
    • http://pettwayfamilyreunion.com/clients/39389/File/nuzadoseridi.pdfIn PDF document text
    • https://sbsoftware.ro/admin/userfiles/file/losod.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/utg1ne7d6a1fpmbektp2me75c0/tifugix.pdfIn PDF document text
    • https://wecareprogram.org/images/file/13693465329.pdfIn PDF document text
    • http://www.scea.edu.mn/ckfinder/userfiles/files/11502280408.pdfIn PDF document text
    • http://luckdidea.com/ckfinder/images_store/files/3810146482.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/fa498d3479d339e28499884eee5d6e4b/18696218434.pdfIn PDF document text
    • http://stadion-zarya.ru/ckfinder/userfiles/files/77284236687.pdfIn PDF document text
    • https://lensprovn.com/ckfinder/userfiles/files/rutibezef.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/d5b56b805790173248225dd09c0cfc29/90732640482.pdfIn PDF document text
    • http://coniperfumes.cl/js/ckfinder/userfiles/files/72591308021.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/f94627eaec4d5dcc6fe3d6d752fd74c2/79545782723.pdfIn PDF document text
    • http://starsunited.at/upload/files/39693167815.pdfIn PDF document text
    • http://hpworld.hu/data/pic/Image/file/dimavekalavajobivaso.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160946a2351566---4640158777.pdfIn PDF document text
    • https://olterus.info/contents//files/34532467397.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=adestramento+de+c%C3%A3es+filhotes+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_off000111a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111A5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000129b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129B7 19824 bytes
SHA-256: fb3c3782fcce0da281fd06559926db8694fd9745f83c8d8738c7f14c67fd10ac

Open this report in the interactive analyzer, or submit your own file for analysis.