PDF malware analysis — malicious · 5836add43746621b

MALICIOUS

PDF

136.1 KB

MD5: d9c0446f092f23df1691139f29e11280 SHA-1: 1d33a04454596f062c1bb1974fa2769ce17bf059 SHA-256: 5836add43746621bedf70f74ef8ffdbfe5382b9e3aa0ad14ad3bf67319c0e101

106 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.001 PowerShell

The critical heuristic firing for CVE-2010-2883 indicates that this PDF document exploits a known vulnerability in Adobe Reader. The presence of embedded JavaScript streams, including a large one named 'javascript_obj0029_000.js', suggests that the exploit is used to execute malicious scripts. These scripts are likely responsible for downloading and executing a secondary payload, which is a common attack pattern for this type of exploit. The document body content is heavily obfuscated and does not provide direct clues to the user-facing lure.

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_obj0029_000.js` `7bbd727f916923b6836f1b78c9b06632864ccf6a1d6243d56832e5c2c690c578`	pdf-javascript-stream	PDF /JS object 29 at offset 0x204E9	15301 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`javascript_obj0038_001.js` `2c0b66ec50073178ddc3de2aaf0627ef83819a8f71c118ff3b075b4bd82749fe`	pdf-javascript-stream	PDF /JS object 38 at offset 0x1B82	1242 bytes
`javascript_obj0039_002.js` `d8bbcc5984e6bec8996e18881fad0486ff520c9b9f03ee0fb9694ddfc412340d`	pdf-javascript-stream	PDF /JS object 39 at offset 0x214F	1572 bytes
`stream_004_off00000b11.bin` `69e17a0038b9273e6d005ef52313a832cb41b9cf9713d6134d0cf9f2e59298a7`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xB11	434 bytes
`font_00_sfnt_off00001152.bin` `fc85f44193ccd402987935418c4f5fdf6802c96450b789e7fce04f9791933021`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1152	7965 bytes
`font_01_sfnt_off00001903.bin` `1e827515a464087cdace63e3578c118b45a657ed40cdbb9de7eead35c9b593ba`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1903	7965 bytes

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