Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8682fcba0f24cd4…

MALICIOUS

PDF

288.6 KB Created: 2021-04-10 17:25:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 106731bfae0d26d0ba04ea08c3cc06ee SHA-1: 8ea4f365f28517177115a5239409ac23766d801f SHA-256: c8682fcba0f24cd44abe85ff6c09d59f4da6072334ee53d73d742c3de17e305b
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, some of which are unknown or lead to suspicious domains, suggests an attempt to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are commonly used for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7983

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://aboss.by/sites/default/files/webform/76513539396.pdf In PDF document text
    • http://pilgrimland.com/sites/default/files/webform/resume-uploads/jokefogebefuzifuzew.pdfIn PDF document text
    • https://www.mainephilanthropy.org/sites/default/files/50588642306.pdfIn PDF document text
    • http://oaklandchildcare.org/sites/default/files/webform/41266633523.pdfIn PDF document text
    • https://www.dgs-interparts.be/sites/default/files/64751185730.pdfIn PDF document text
    • https://www.woonsocketri.org/system/temporary/webform/viwubamonutimujogigifowi.pdfIn PDF document text
    • http://cicatsalud.com/html/sites/default/files/webform/buvonajevomowetizebijix.pdfIn PDF document text
    • http://www.pbttphtk.gov.my/sites/default/files/webform/1232685222.pdfIn PDF document text
    • https://www.telluridescience.org/sites/default/files/tstc-applications/90077644064.pdfIn PDF document text
    • http://www.muttypawsacademy.com/sites/default/files/webform/vaccines/72246142748.pdfIn PDF document text
    • https://natsihwa.org.au/sites/default/files/webform/mufuwujaxerafesa.pdfIn PDF document text
    • https://extranet.blanchisserie-toulousaine-de-sante.com/sites/extranet.blanchisserie-toulousaine-de-sante.com/files/documents/justificatifs/pefusoxewirevujilo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.orgThisIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=tito+e+canto+volume+2+pdfPDF link annotation
    • https://community.princeton.edu/system/files/webform/13590028771.pdfIn PDF document text
    • https://www.ice.cam.ac.uk/sites/www.ice.cam.ac.uk/files/webform/7842358922.pdfIn PDF document text
    • https://lib.asu.edu/system/files/webform/midari.pdfIn PDF document text
    • https://community.princeton.edu/system/files/webform/kabajizonen.pdfIn PDF document text
    • https://www.ice.cam.ac.uk/sites/www.ice.cam.ac.uk/files/webform/68876097481.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://scripts.sil.org/In PDF document text
    • http://scripts.sil.org/OFLAbyssinicaIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004277a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4277A 5168 bytes
SHA-256: 5ace2ec1132fe1c7c7d6c392811102edd1c832f06898ad8b2ad7fd612d1b837c
font_01_sfnt_off00043913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43913 21644 bytes
SHA-256: 85120bd3344f3b4e7b755a3e5a6f2733fe14a4c427b3004bb81228a81f8bd060
font_02_sfnt_off00045ae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45AE8 4584 bytes
SHA-256: 047a6246e645c49cc61dc746efdc8c86c763b85662b9cd7169053c8e9347bb18