PDF malware analysis — malicious · 503d5f7cada2c2df

MALICIOUS

PDF

21.3 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: ca1c1adab23e5baeeb3b49e0809e4ad4 SHA-1: f5c209f8c33735729b1b11d00bed5cdd2e9b232c SHA-256: 503d5f7cada2c2df7497dce0765e108863cd07a986b0c3ccc23c4a3a6150115b

318 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

This PDF file is malicious, leveraging multiple known vulnerabilities (CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) related to JavaScript execution within PDF documents. The embedded and deobfuscated JavaScript, identified as 'numeric_charcode_stage_000.js', is highly suspicious and detected by ClamAV as 'Js.Exploit.Shellcode-18'. The primary function of this script appears to be downloading and executing a second-stage payload, as indicated by the ClamAV detection 'Pdf.Exploit.Agent-6078'.

Heuristics 8

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-6078 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-6078
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.
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.
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_obj0013_000.js` `c84af0cdd1c1923ab82c10205543e8b8afee39186df819ed2b535697311134f4`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	20297 bytes
`numeric_charcode_stage_000.js` `4d25d191184509c40319cb7d60ad46ec7af257dee73ea5a69f33cc9e44562625`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x349	4642 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.