PDF malware analysis — malicious · 7948914a638a3ff4

MALICIOUS

PDF

12.3 KB

MD5: db4795d9badcca95415f390499e0aa29 SHA-1: f5b906114145e66dbd8c0b45dac076fe9e2fd96b SHA-256: 7948914a638a3ff4155bdc19fc830043e80d8796cc280fbd1803464b45304d77

78 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2007_5659 heuristic indicates the exploitation of a known vulnerability in Adobe Reader using the Collab.collectEmailInfo method to execute JavaScript. This script is likely designed to download and execute a second-stage payload, as suggested by the suspicious extracted artifacts like 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js'. The lack of readable document body text prevents a more specific assessment of the lure, but the technical execution path is clear.

Heuristics 4

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)
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` `1847af0a099665b6ac45af66402e56ed64237a1b287618ee3d6643267fda6f35`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	343 bytes
`legacy_pdfkit_stage_000.js` `d5525271b0f8143dcd386325b76c031fb954bfe5f4b8b9318ba9de2a0f60731e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	12116 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `f14050d291e98c0b0c2a2f73b7763af6f96fb1634f7a8a9a556a25f52529289c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	5010 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.