PDF malware analysis — malicious · 4aefb57741071ab9

MALICIOUS

PDF

132.5 KB

MD5: c368389e9749860824a6a36a4624b4d0 SHA-1: 969c08589bc7fdadab7492bdd60d11321d151a68 SHA-256: 4aefb57741071ab9074c5759d9eb43aecf32b968418a8c5e79b3c451feec6950

248 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript and exploits known vulnerabilities (CVE-2009-4324 and CVE-2007-5659) via its media.newPlayer and Collab.collectEmailInfo actions. The embedded JavaScript stream, named 'javascript_obj0022_000.js', is obfuscated and likely responsible for further malicious activity, such as downloading a second-stage payload. The presence of these exploits and obfuscated script strongly suggests a malicious intent.

Heuristics 9

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (matched in decompressed stream)
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. (matched in decompressed stream)
Embedded PDF child has suspicious static findings critical PDF_EMBEDDED_CHILD_STATIC_TRIAGE

PDF contains an embedded PDF stream whose extracted child matches suspicious or malicious PDF heuristics. Wrapper PDFs are commonly used to hide the actual exploit or lure payload from scanners that do not recursively inspect attachments.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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.
Remote GoTo action info PDF_GOTO_REMOTE

PDF has GoToR/GoToE actions that reference sibling document files — typical of multi-part document bundles
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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0022_000.js` `6595307c8f01bd0ae97c3d887de3d4dfcc3707dc2ded2dfd159354891a844121`	pdf-javascript-stream	PDF /JS object 22 at offset 0x1791	4821 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 17 eval/decoder/string-building token(s).
`font_00_cff_off00000761.bin` `e49c7bfbfc818e2f3954d4ce70a2bc6318ccf9c1ef2ef63ca76cf26462f5efaf`	pdf-font-stream	PDF embedded font (cff) at offset 0x761	321 bytes
`font_01_cff_off00000949.bin` `0db45283fafc3c1e8370dd30f58eb4eb6464083cb54cb4ab4ab9214e7e8b6dd7`	pdf-font-stream	PDF embedded font (cff) at offset 0x949	2955 bytes
`embedded_file_obj0005.bin` `c5b524897e6777818b6a8927b8dcd671bdf33558aa82647c1e94f072fb5653c0`	pdf-embedded-file	PDF EmbeddedFile object 5 at offset 0x1E1	164019 bytes

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