PDF malware analysis — malicious · b19d25716bb48763

MALICIOUS

PDF

45.6 KB

MD5: d107babe408cc0d557ff55d330943208 SHA-1: c5523fb88947913ba194638a5f2eb647230c5900 SHA-256: b19d25716bb4876312f0523fc74112ecc6f7ed39a7eb19cc9ead332f3f900b84

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.001 Malicious Link/Object T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The critical heuristic 'CVE_2007_5659' specifically points to the use of 'collab.collectEmailInfo' with z-percent UTF-16BE base-21 decoded JavaScript, a known indicator for exploiting Adobe Reader vulnerabilities. This suggests the document is designed to trigger an exploit, likely to download and execute a secondary payload. The presence of U3D content also flags potential exploitability.

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)
U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED

PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
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.
syncAnnotScan annotation-staging primitive low PDF_FOXIT_SYNCANNOTSCAN

PDF JavaScript calls syncAnnotScan() — a no-op annotation-enumeration primitive used by exploit-kit JavaScript to stage payload reads from annotation /Subject fields before eval(). Not a vulnerable sink itself; rarely seen in legitimate PDFs. (matched in decompressed stream)
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_obj0009_000.js` `b0daa6ea4841c48ccbb2302c0881029ea905bcdcd20756410b35c588857ca6eb`	pdf-javascript-stream	PDF /JS object 9 at offset 0x47A5	555 bytes
`legacy_pdfkit_stage_000.js` `0c3d081c3e9886766ce57278c830cbe05cff60a340f93e0b8c3680524cecb0d6`	deobfuscated-js	z-percent UTF-16BE base-21 decoded JavaScript at offset 0x1C7C	5641 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`deobfuscated.js` `b1317f05144747bbb0facfbf2d652479d6564adeaad25a02e43314fbb5916a26`	deobfuscated-js	PDF JavaScript deobfuscation pass	260752 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`u3d_00_off00004a08.bin` `a96e1fca2499edf504d3934052ca1fc338d4b4898a65e6a361937ed1ba0dc0fe`	pdf-3d-stream	PDF U3D 3D stream at offset 0x4A08	28021 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.79, consistent with packed or encrypted content.

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