Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e296388ef91b27…

MALICIOUS

PDF

85.2 KB Created: 2021-04-20 02:15:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bdcf6654eebec3b56d857d02a2482d8 SHA-1: 973724fbd9b6e3fd70c17f6c504e1457af4d6550 SHA-256: 60e296388ef91b272419ed7e7c5f6344d42654d5acc712d273babefb9d89d87d
96 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, with a critical detection score. It contains embedded URLs that point to potentially malicious domains, disguised as legitimate documents. The presence of PDF_URI and EMBEDDED_URL heuristics indicates an attempt to redirect users to external resources, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.telluridescience.org/sites/default/files/tstc-applications/fezijorimofilafomifum.pdf
    • https://www.woonsocketri.org/system/temporary/webform/bogobovimefegaf.pdf
    • https://ambrose.edu/sites/default/files/webform/61928937085.pdf
    • https://www.uts.cw/sites/default/files/webform/47116150145.pdf
    • http://www.pbttphtk.gov.my/sites/default/files/webform/32056102714.pdf
    • http://www.grotekeukens.be/sites/default/files/webform/gmawards2018/30150103061.pdf
    • https://www.enwidth.com/sites/default/files/webform/resumes/bemefunojupupik.pdf
    • https://www.blplegal.com/sites/default/files/webform/vogelunejubujapezidugave.pdf
    • https://www.uts.cw/sites/default/files/webform/bofuwidesuxugebogaxa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=differential+calculus+limits+problems+and+solutions+pdf
    • https://printandmail.princeton.edu/system/files/webform/50156150340.pdf
    • https://gradfutures.princeton.edu/system/files/webform/86626084736.pdf
    • https://ec.europa.eu/eip/agriculture/sites/default/files/webform/sukazejaso.pdf
    • https://lib.asu.edu/system/files/webform/simadovi.pdf
    • https://community.princeton.edu/system/files/webform/setokan.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9cb.bin
ae7d7492b24d7a8b9e59da2d3c3f311a059cf7cc6e076ede6914091ac63c2a6e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CB 5440 bytes
font_01_sfnt_off00010c33.bin
3e5d8adec346f27868cc68626a06f933782a3df2ae18205779c2063013cc241d
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C33 10936 bytes
font_02_sfnt_off00013218.bin
ae97ebdbf5cb6679ee3ae7f6f8963da9ec2437ada1f672a33085bc8cbe806833
pdf-font-stream PDF embedded font (sfnt) at offset 0x13218 16060 bytes