Malicious PDF — malware analysis report

Static analysis result for SHA-256 c49afc9a65e31e6d…

MALICIOUS

PDF

76.2 KB Created: 2021-09-01 21:11:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 8a7b5eefa5a05bea06964c054c15c4c1 SHA-1: 379bdc3a35eac3df291221eed0b2c52ed7177bbc SHA-256: c49afc9a65e31e6da236ebd2f1cc053a5a4d7b25e7f3059e66b474d042d4eeaa
124 Risk Score

Malware Insights

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

This PDF file contains a large number of links, many of which point to compromised WordPress sites and disposable domains. The ClamAV detection and heuristic firings indicate this is likely a phishing or malware distribution lure. The file's structure and numerous outbound links suggest it is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3943

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://prospekt-rostov.ru/ckfinder/userfiles/files/poneletoxuvorekuxigo.pdf In PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076f5289f4a6---bebulazologudavuj.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/7v0tqu88k5m65eejkfftdjg010/77275969667.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/34410811324.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1077f2ee8b---gitufuwapobevawo.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1608870714dc78---zipetava.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1608df7452db72---vetejigulanaludugibujison.pdfIn PDF document text
    • http://duhochmis.com/files/uploaded/files/50559506688.pdfIn PDF document text
    • https://roweryelectra.pl/app/webroot/uploads/file/16241907707427.pdfIn PDF document text
    • http://bielle-srl.com/userfiles/files/nekufumevaf.pdfIn PDF document text
    • https://braindevelopmentmaps.org/userfiles/files/forematulopofadukezuxa.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607ed0f81521f---64906429035.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/buzekazejefejur.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/1ccba371b4989322b0e1ad0ff6ebad15/26795802597.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/7053efb6d00c45ba1c3e3f086ef48833/sodakeviso.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/454600c641e90e994b6f69793787bb73/91998814501.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/1ibqif1ogd6l2hjv7m34uqsn4o/84812370996.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1609c456420d92---14375214084.pdfIn PDF document text
    • http://revize-elektro.info/UserFiles/File/punetogagopobekefomipu.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e0f8006b8e3---10646995959.pdfIn PDF document text
    • https://www.kuwaitpolyurethane.com/ckfinder/userfiles/files/82678250224.pdfIn PDF document text
    • http://aaronandanthony.com/userfiles/files/xekazirizurafitak.pdfIn PDF document text
    • https://thefertilizergranulator.com/d/files/vemonitizof.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/2brp1n39id7i56sjl1v81t7cib/70612145542.pdfIn PDF document text
    • http://marthomaiticherukole.com/userfiles/file/pebiz.pdfIn PDF document text
    • http://geoass.eu/userfiles/files/83724961714.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=use+nausea+in+a+sentencePDF 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_off0000f596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF596 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA8 15820 bytes
SHA-256: 88e58a7fac811a781cd58aa662d36697a0f244e988a32feee6457c44e253c30f