Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eeb852cf9622fcb…

MALICIOUS

PDF

434.8 KB Created: 2012-06-26 17:41:27 +01:00 Authoring application: LaTeX with hyperref package (via pdfTeX-1.40.10)
MD5: 5b6fb9f211364a047912ab7c8403b64e SHA-1: c42b626e547f0a15869f9af37064c83647959286 SHA-256: 1eeb852cf9622fcb658095c67cbc120ed04fe17d5df104dfabef9ff988816afb
346 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link T1566.002 Spearphishing Attachment T1071.001 Web Protocols

This PDF document contains embedded JavaScript and a critical PDF_LAUNCH action targeting cmd.exe, indicating an attempt to execute commands on the user's system. The document's content and the presence of a 'Recovery secret / private key request' heuristic strongly suggest a phishing lure designed to steal sensitive credentials. The execution of cmd.exe via a launch action is a direct indicator of malicious intent, likely to download and execute further payloads or directly exfiltrate information.

Heuristics 12

  • Launch action critical PDF_LAUNCH
    PDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
  • /Launch action target: cmd.exe critical PDF_LAUNCH_COMMAND
    PDF /Launch action specifies an executable target with parameters '/Q /C %HOMEDRIVE%&cd %HOMEPATH%&(if exist "Desktop\\README.pdf" (cd "Desktop"' — references a known-dangerous executable (cmd, PowerShell, etc.).
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • ClamAV: Pdf.Tool.Agent-1388586 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Tool.Agent-1388586
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • Unusually high stream count medium PDF_MANY_STREAMS
    PDF contains 501+ stream objects — may indicate heap spray or heavy obfuscation
  • Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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://www.sqlmap.org
    • http://corelabs.coresecurity.com/index.php?module=Wiki&action=view&type=tool&name=Impacket
    • http://initd.org/psycopg/
    • http://archives.neohapsis.com/archives/fulldisclosure/2010-01/0346.html
    • http://www.sqlmap.org/#developers
    • http://www.athcon.org/speakers/
    • http://www.athcon.org/archives/2010-2/
    • http://www.sqlmap.org/#ml
    • https://svn.sqlmap.org/sqlmap/trunk/sqlmap/
    • http://www.pornosecurity.org
    • http://www.sourceconference.com/index.php/pastevents/source-barcelona-2009/schedule
    • http://www.sourceconference.com/index.php/pastevents/source-barcelona-2009
    • http://200902.confidence.org.pl/
    • http://www.digitalsecurityforum.eu/
    • http://eusecwest.com/
    • https://github.com/sqlmapproject/sqlmap
    • http://www.privoxy.org
    • http://www.wisec.it/sectou.php?id=472f952d79293
    • http://www.syntevo.com/smartgit/index.html
    • http://www.phpids.org
    • http://www.python.org
    • http://python.org/download/
    • http://metasploit.com
    • http://metasploit.com/download/
    • http://kinterbasdb.sourceforge.net/
    • http://pyodbc.googlecode.com/
    • http://pymssql.sourceforge.net/
    • http://code.google.com/p/pymysql/
    • http://cx-oracle.sourceforge.net/
    • http://pysqlite.googlecode.com/
    • http://code.google.com/p/python-ntlm/
    • http://pysvn.tigris.org/
    • http://ipython.scipy.org/moin/PyReadline/Intro
    • http://docs.python.org/library/readline.html
    • http://psyco.sourceforge.net/
    • http://www.owasp.org
    • http://owasptop10.googlecode.com/files/OWASP%20Top%2010%20-%202010.pdf
    • http://www.owasp.org/index.php/Category:OWASP_Top_Ten_Project
    • http://delicious.com/inquis/sqlinjection
    • http://www.youtube.com/user/inquisb#g/u
    • http://portswigger.net/suite/
    • http://www.owasp.org/index.php/Category:OWASP_WebScarab_Project
    • http://www.google.com
    • http://w3af.sourceforge.net/
    • http://bernardodamele.blogspot.com/2007/06/database-management-system-fingerprint.html
    • http://bernardodamele.blogspot.com/2007/07/more-on-database-management-system.html
    • http://www.slideshare.net/inquis/advanced-sql-injection-to-operating-system-full-control-whitepaper-4633857
    • http://www.slideshare.net/inquis/expanding-the-control-over-the-operating-system-from-the-database
    • http://www.microsoft.com/technet/security/Bulletin/MS08-068.mspx
    • http://www.microsoft.com/technet/security/bulletin/ms09-004.mspx
    +29 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj1492_000.js
1381ebf27530b003d98291c41853e2a0e17178d0eb2019570b9e65f165d424a2		 pdf-javascript-stream PDF /JS object 1492 at offset 0x6C53D 55 bytes
font_00_type1_off000517ea.bin
b57cfbe9e52b89772221d1c1c609ddcd558f8c2d0248038398a9bfafdf188d80		 pdf-font-stream PDF embedded font (type1) at offset 0x517EA 7490 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.82, consistent with packed or encrypted content.
font_01_type1_off000534bc.bin
4fe7537bfe726907a10d06933f1f6dfdc5b9be3eacbef4c7a2f0b8c31ab420f2		 pdf-font-stream PDF embedded font (type1) at offset 0x534BC 7432 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.84, consistent with packed or encrypted content.

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