Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfc27016b61d9729…

MALICIOUS

PDF

29.1 KB Created: 2010-08-29 16:19:36 Authoring application: GtubYj BelyspykOsuqobo
MD5: 3ab2870b2626d4f9c52f00cf39fa004a SHA-1: 33267386fd8b9b3c49d36fabc10de9c255c9508d SHA-256: bfc27016b61d9729d29fbafee89a466cfae31fcde8e7e6671b8cd76cd4c58191
238 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter T1059.001 PowerShell

This PDF file contains embedded executable scripts and is flagged by ClamAV as Pdf.Exploit.Dropped-81. The heuristics indicate the presence of XFA forms with risky executable scripts and embedded file payloads. The embedded scripts are likely responsible for downloading and executing a second-stage payload, as suggested by the 'EXTRACTED_FILE_CLAMAV' detection of 'Pdf.Exploit.Agent-36318'. The document body text is obfuscated and does not provide clear user-facing content.

Heuristics 9

  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • ClamAV: Pdf.Exploit.Dropped-81 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-81
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Suspicious extracted artifact info 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.
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xfdf/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 8

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
04462f810d6eacdacecc9d0a5f3f81bebc722af4415e04da19b520338f642b51		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x1AB 67 bytes
embedded_file_obj0009.bin
6b2260d3c78649345d3f0b850b831d545d33bb7017ccdf438cdfe1e9db7f2db2		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x238 294 bytes
embedded_file_obj0010.bin
70d78de3d1714d8698c9785015b4af14d8e29c7c62139e94889a10cc3902fa5c		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x3A9 581 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36318
Obfuscation or payload: unlikely
embedded_file_obj0011.bin
b97b2d80a4bd640a5d98598b68fc41ae7bb3116be9626677a0d3f2a47104c8bf		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x639 26331 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).
embedded_file_obj0012.bin
103d1e7983cf88bfacedddb4af33ffb5317d9c2c8b3e1bfd987b2c5d712bc985		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x6D5F 323 bytes
embedded_file_obj0014.bin
2f14f511fc441ebd7302afbf3a4bfc6a5f688fedb7cb25026db4412d360c42a1		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x6EEC 160 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).
embedded_file_obj0015.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876		 pdf-embedded-file PDF EmbeddedFile object 15 at offset 0x6FD2 77 bytes
embedded_file_obj0016.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a		 pdf-embedded-file PDF EmbeddedFile object 16 at offset 0x7066 56 bytes

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