PDF malware analysis — malicious · 97097387ec65a4d5

MALICIOUS

PDF

76.5 KB Created: 2009-12-12 19:48:14 Authoring application: PDF Library 10.4.1 (via PDF Library 10.1.2)

MD5: 36bde6d505606fb8959316a183a3ad52 SHA-1: cdfd6a3d1d263673da9ab005e8ae30ead6723f80 SHA-256: 97097387ec65a4d51f5f63a2ed601c4e23c2cd9a313abd03ffc600c4d9c2d7f6

340 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious JavaScript

The PDF file contains embedded JavaScript that leverages multiple critical vulnerabilities in Adobe Reader, specifically Collab.getIcon (CVE-2009-0927), Collab.collectEmailInfo (CVE-2007-5659), and util.printf (CVE-2008-2992). Static analysis indicates that this JavaScript is encoded and likely serves to download and execute a second-stage payload, as suggested by the detection of a suspicious JavaScript artifact by ClamAV. The file is identified as malicious by ClamAV with the signature Pdf.Exploit.Agent-36110.

Heuristics 10

Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
ClamAV: Pdf.Exploit.Agent-36110 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36110
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.
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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.
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `ecbf84aade966f41436b9eb64485e9330c5da9981e7df4706120954b93a9fc5b`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	38661 bytes
`legacy_pdfkit_stage_000.js` `8a24b63baf8a440da10473ab4855b184da6e73028ab79457228c66d173a8800d`	deobfuscated-js	numeric array subtract-key decoded JavaScript at offset 0x1A5	10030 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 9 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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