PDF / .TMP malware analysis — malicious · 1ca6672794ac0550

MALICIOUS

PDF / .TMP

43.6 KB

MD5: a97d49b17c4e27ea3acc18804daca748 SHA-1: 60b0b1c65e673b274bb92bfadaebbe2c870a93f3 SHA-256: 1ca6672794ac0550f167c7d5b901dfe7db461d015b7d5a765bbe5e5803e9dd0b

66 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains embedded JavaScript and a U3D (3D content) stream, triggering heuristics related to JavaScript execution and potential exploitation of Adobe Reader 3D parser vulnerabilities. The presence of deobfuscated JavaScript files suggests the script is designed to perform malicious actions, likely downloading and executing a second-stage payload. The specific JavaScript streams and the U3D content are the primary indicators of compromise.

Heuristics 5

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_obj0005_000.js` `e98d2ee473b9a16751401b2efe1ab53561db61f4b1f06b39437a60319734e8ab`	pdf-javascript-stream	PDF /JS object 5 at offset 0x14F	479 bytes
`legacy_pdfkit_stage_000.js` `3f9f1994f83cb0c2d25da7840fa32ff8ee6f8f42f34dcc13f27aede4b5d8201a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1C21	13174 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`deobfuscated.js` `39f002404119adab841c5fa527fe6cddc48a444b28ccc3d123de0a2a16dcb058`	deobfuscated-js	PDF JavaScript deobfuscation pass	213144 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`u3d_00_off0000423b.bin` `fb27c6f6ffe2b08a88f79f344ef3cb4f85460ac81a062194b6fd84ab6e48b628`	pdf-3d-stream	PDF U3D 3D stream at offset 0x423B	28021 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.79, consistent with packed or encrypted content.

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