PDF malware analysis — malicious · d2e836b34d044398

MALICIOUS

PDF

12.9 KB

MD5: 75a73c5bcb9d6595200f53213d2d2058 SHA-1: fb8e94bec5e8c8009cc675f43c905d53e8a61aa4 SHA-256: d2e836b34d0443986c74cc4a66c9b6345911c8054d18d79cb6d7f3daa566458b

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file contains embedded JavaScript, triggered by the 'Collab.collectEmailInfo' method which is known to be vulnerable (CVE-2007-5659). The JavaScript is obfuscated and appears to act as a stager, likely intended to download and execute a second-stage payload. The ClamAV detection 'Pdf.Exploit.Agent-36064' further supports its malicious nature. The exact payload and delivery mechanism are not fully discernible due to obfuscation, hence the confidence level.

Heuristics 6

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)
Annotation subject percent-decoding eval stager critical PDF_ANNOT_SUBJECT_MARKER_EVAL_STAGER

OpenAction JavaScript forces annotation enumeration, reads an annotation /Subject payload with getAnnots(), rewrites marker bytes into percent escapes, decodes it with unescape(), and dispatches it through eval. This is a high-confidence exploit-kit staging pattern. It is intentionally not mapped to CVE-2009-1492 unless getAnnots() itself carries the crafted integer or long argument shape for that vulnerability.
ClamAV: Pdf.Exploit.Agent-36064 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36064
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `a5c8f0f722df4dd9876a0087e1eee65bd3020c5995f94f6729f7e17f3f3677a0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	331 bytes
`legacy_pdfkit_stage_000.js` `096fc9fdfe768315ec8fe987d8a21c426fedf6dcb26397b15afcf95e85a2fa6b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	11960 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `e88217d8de55fc6597179ec0700b4b647aa132d934fe7721b0ce723e8ff27014`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	4971 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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