PDF malware analysis — malicious · 49f66bab5243b956

MALICIOUS

PDF

154.2 KB

MD5: bba871684621ee629b2aa6d256d6bc90 SHA-1: 329c84746cc103a26ea0f40413de7dc735623f4e SHA-256: 49f66bab5243b956a04f1438b2e08e27599da7e3e0fe80048a9da84b544cf2e3

108 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell T1059.007 Command and Scripting Interpreter: JavaScript

This PDF file exploits CVE-2010-2883, a known vulnerability in Adobe Reader related to font handling. The critical heuristic firing indicates this exploit is present. The file also contains embedded JavaScript streams, which are commonly used to download and execute further malicious content. The presence of JavaScript and the exploit suggests a downloader or dropper functionality.

Heuristics 7

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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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` `5517678b01aa4dd3bc4b773c21cdfcbd56518eccd3d521fa08a2ff25ec90291c`	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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