Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d449a137e7d23f9…

MALICIOUS

PDF

58.8 KB Created: 2021-04-17 05:01:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6aa310d817be713a6620b67a48e6cac8 SHA-1: c430729b12b8b1711de449c4d29ae5698061ec92 SHA-256: 7d449a137e7d23f96bb88a511f21893ce7778007f3cd552e6f3c864091078ffd
124 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier also indicated maliciousness. It contains numerous embedded URLs, many of which point to suspicious domains and are structured to appear as legitimate document links, suggesting a phishing or malware distribution attempt. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, indicating the document is part of a link farm designed to mislead users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7342

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 http://cicatsalud.com/html/sites/default/files/webform/17654710786.pdf
    • https://www.telluridescience.org/sites/default/files/tstc-applications/90077644064.pdf
    • http://spotlight-sites.com/sites/default/files/webform/jalipoxelelikepobolid.pdf
    • http://www.guninetwork.org/system/files/webform/heirri_proposals/32710798707.pdf
    • http://www.guninetwork.org/system/files/webform/heirri_proposals/38059385999.pdf
    • https://ambrose.edu/sites/default/files/webform/tinijozude.pdf
    • https://www.jwico.com/sites/default/files/webform/23528315583.pdf
    • https://web.liderpapel.com/sites/default/files/webform/21411595718.pdf
    • https://vectorcorp.net/sites/default/files/webform/resume/tefofavokalozigukar.pdf
    • https://www.mothercare.ro/sites/default/files/webform/resumes/tizagoge.pdf
    • https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/fifomibap.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=how+to+use+google+maps+satellite+view
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d24d.bin
7836f3d724642f6c87171baddb8e89e7cede7ba23df804087fe29da67c932b6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD24D 5156 bytes

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