Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c1b5d7e69fb13e0…

MALICIOUS

PDF

58.4 KB Created: 2021-04-07 01:48:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce8a26687a417884e7547054339f9e07 SHA-1: ecc31d77bf34fd27c3e0a5b517eec155a573232b SHA-256: 1c1b5d7e69fb13e0a8eb282b2980511050e048ebe332de9c13e0713709a5248c
124 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains numerous embedded URLs, many pointing to disposable domains, and uses SEO-like terms in its URLs to attract victims searching for free downloads. The document body, though heavily obfuscated, appears to be related to a book download lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6609

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.pharoxglobal.com/sites/default/files/webform/garuwofewitenobakufenewi.pdf
    • http://www.sumnercountyhospital.org/sites/default/files/webform/vetasitumuwogemukuruv.pdf
    • https://ambrose.edu/sites/default/files/webform/11364316539.pdf
    • https://vectorcorp.net/sites/default/files/webform/resume/27999686052.pdf
    • https://www.mothercare.ro/sites/default/files/webform/resumes/jilagofuzepev.pdf
    • https://ambrose.edu/sites/default/files/webform/28961662769.pdf
    • https://www.telluridescience.org/sites/default/files/tstc-applications/90077644064.pdf
    • https://www.natsihwa.org.au/sites/default/files/webform/doxuwekuwazomiloxeri.pdf
    • https://www.ofalloncasting.com/sites/default/files/webform/81254010544.pdf
    • https://www.telluridescience.org/sites/default/files/tstc-applications/pagasumoxozodaxatukaliwus.pdf
    • http://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=steven+pinker+enlightenment+now+pdf+free+download
    • https://campusrec.princeton.edu/system/files/webform/rilawadabovoxilezevateg.pdf
    • https://ubmemeaensoprod.s3.amazonaws.com/ifsec_international/call_for_papers/2021/03/52983615418.pdf
    • https://ubmemeaensoprod.s3.amazonaws.com/ifsec_international/call_for_papers/2021/03/37488496184.pdf

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