PDF malware analysis — malicious · c51869d6b9a167fd

MALICIOUS

PDF

110.6 KB

MD5: bd53af168abf2d2b90162f70c57f66c7 SHA-1: c5ac039e0b6e9b54a49a3e50dd4d207d5611fdab SHA-256: c51869d6b9a167fdbcfb799ab851c988ffd6fac6262512d213efa83b1e941b63

154 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains multiple embedded JavaScript streams and triggers a critical heuristic for the CVE-2010-2883 Adobe Reader CoolType SING font exploit. The presence of JavaScript actions and embedded JS streams indicates that the document is designed to execute code. The extracted JavaScript files are likely responsible for downloading and executing a second-stage payload. The specific exploit and embedded scripts strongly suggest malicious intent.

Heuristics 8

Adobe Reader CoolType SING font exploit — CVE-2010-2883 critical CVE likely CVE_2010_2883

PDF embeds a TrueType/OpenType font with an actual SING table and pairs it with JavaScript heap-spray shellcode. This matches the public Adobe Reader CoolType SING exploit shape for CVE-2010-2883.
RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
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 7

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0029_000.js` `9336962c9da1a26877bb4186faf05e0e6203d746fa1414225637f834952d0507`	pdf-javascript-stream	PDF /JS object 29 at offset 0x1A501	19427 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 long base64-like blob(s).
`javascript_obj0038_001.js` `2c0b66ec50073178ddc3de2aaf0627ef83819a8f71c118ff3b075b4bd82749fe`	pdf-javascript-stream	PDF /JS object 38 at offset 0x19E8	1242 bytes
`javascript_obj0039_002.js` `d09a588b22eec2c7828c33f700a6cb6f74ac83f5d53d6ca286bc44cce07b1907`	pdf-javascript-stream	PDF /JS object 39 at offset 0x1FB9	3781 bytes
`javascript_obj0056_003.js` `fd7d21cf68514556b0343a05f24c2ad1824764617801ef6fe16cc43b30be96d4`	pdf-javascript-stream	PDF /JS object 56 at offset 0x2E8A	1064 bytes
`stream_004_off000009f6.bin` `69e17a0038b9273e6d005ef52313a832cb41b9cf9713d6134d0cf9f2e59298a7`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x9F6	434 bytes
`font_00_sfnt_off00000fb8.bin` `fc85f44193ccd402987935418c4f5fdf6802c96450b789e7fce04f9791933021`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB8	7965 bytes
`font_01_sfnt_off00001769.bin` `1e827515a464087cdace63e3578c118b45a657ed40cdbb9de7eead35c9b593ba`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1769	7965 bytes

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