PDF malware analysis — malicious · 35a3aaae071787c9

MALICIOUS

PDF

42.9 KB

MD5: fcac7a59941c364f8f4f8b4f0ab9c55b SHA-1: d5269561b9a287d63a0ea4aa34fa34c786ba29ca SHA-256: 35a3aaae071787c93646cb296ad3b857ab0e01a57e7a3cdab5b07d4e5893a364

106 Risk Score

Malware Insights

The PDF file contains embedded JavaScript and triggers the CVE-2010-2883 exploit for Adobe Reader. The embedded JavaScript streams, particularly 'stream_010_off00002a6e.js', are indicative of malicious intent, likely to download and execute a second-stage payload. The presence of XFA forms and ASCIIHexDecode filters further supports a malicious interpretation.

Heuristics 6

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.
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.
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0038_000.js` `2c0b66ec50073178ddc3de2aaf0627ef83819a8f71c118ff3b075b4bd82749fe`	pdf-javascript-stream	PDF /JS object 38 at offset 0x1D47	1242 bytes
`javascript_obj0039_001.js` `d8bbcc5984e6bec8996e18881fad0486ff520c9b9f03ee0fb9694ddfc412340d`	pdf-javascript-stream	PDF /JS object 39 at offset 0x231A	1572 bytes
`stream_004_off00000cd0.bin` `69e17a0038b9273e6d005ef52313a832cb41b9cf9713d6134d0cf9f2e59298a7`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xCD0	434 bytes
`stream_010_off00002a6e.js` `9959b0fe34bf06d7c9544a884cec4d5a8111f637b7a494b199a067c2613b00bf`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2A6E	14982 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`font_00_sfnt_off00001315.bin` `fc85f44193ccd402987935418c4f5fdf6802c96450b789e7fce04f9791933021`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1315	7965 bytes
`font_01_sfnt_off00001ac8.bin` `1e827515a464087cdace63e3578c118b45a657ed40cdbb9de7eead35c9b593ba`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1AC8	7965 bytes

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