Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aa935d55e5931e2…

MALICIOUS

PDF

70.9 KB Created: 2021-04-11 09:06:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e95a8dd8c42b1e22ae4509136847e929 SHA-1: eb7157824e7fceacd0ffad46f45ec591e63294e5 SHA-256: 9aa935d55e5931e2d8998c640fd7c72ab7f508491ced4a4c8fbea327963b91ef
124 Risk Score

Malware Insights

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

The PDF file is detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to potentially malicious domains, and is described as a link farm. The document body, though heavily obfuscated, suggests a lure related to an 'Arizona driving manual'. No scripts were extracted, but the PDF structure and embedded links indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7986

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://www.a1touchsolution.nl/sites/default/files/dovav.pdf
    • https://www.jsif.org/sites/default/files/webform/54003515034.pdf
    • https://www.dgs-interparts.be/sites/default/files/viwiredozilopuvotudulufez.pdf
    • https://ambrose.edu/sites/default/files/webform/fenalop.pdf
    • https://extranet.blanchisserie-toulousaine-de-sante.com/sites/extranet.blanchisserie-toulousaine-de-sante.com/files/documents/justificatifs/ziseriwutekezarog.pdf
    • https://www.enwidth.com/sites/default/files/webform/resumes/wefegazeketalewawer.pdf
    • https://www.ofalloncasting.com/sites/default/files/webform/dapajinosez.pdf
    • https://europa-ts.ru/sites/default/files/webform/totikejeropisatuzubafaba.pdf
    • http://www.pacificsportfraservalley.com/sites/default/files/webform/93322629498.pdf
    • http://www.muttypawsacademy.com/sites/default/files/webform/vaccines/17184396690.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=arizona+driving+manual
    • https://lib.asu.edu/system/files/webform/nexeginexepor.pdf
    • https://community.princeton.edu/system/files/webform/putirufulexuxibo.pdf
    • https://minorsoncampus.princeton.edu/system/files/webform/libovonudipiguriteg.pdf
    • https://gradfutures.princeton.edu/system/files/webform/49692556615.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f635.bin
3dd7da1779d70426d6dc6f682a57af067ce4f31c016e75cc530f0acbf4790462		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF635 5068 bytes

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