PDF malware analysis — malicious · 2a34bdf7de8e5610

MALICIOUS

PDF

10.2 KB Authoring application: Kebebagemojef (via 7ae66Comepedevsa)

MD5: a11d2cdbd465a9b8e77ecaf99e554125 SHA-1: 70a82fab4c2df05673e217546dbaf1dade5c4aa9 SHA-256: 2a34bdf7de8e561082ee442fcdee671bb836ac392ad09c92f3803c3710dc7416

298 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains multiple critical heuristic firings indicating the exploitation of several CVEs related to JavaScript execution within PDF documents. Specifically, it leverages page-word XOR decoded JavaScript, triggered by the OpenAction. The embedded JavaScript is obfuscated and likely intended to download and execute a second-stage payload, although the exact URL or payload could not be reconstructed due to the obfuscation.

Heuristics 8

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. (identified after JavaScript deobfuscation)
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)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
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_obj0018_000.js` `ba2f70a9cfcfa281b16e3089556ae50dd63287c9e6010e81d6490737f5978337`	pdf-javascript-stream	PDF /JS object 18 at offset 0x1BA0	3863 bytes
`page_word_xor_stage_000.js` `742d3794d0a89af91b61fd2d73a06d6cc2f9c4213b10eb0076eeee123ca4242c`	deobfuscated-js	page-word XOR decoded JavaScript (decompressed, key=0x3C) at offset 0x803	3400 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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