PDF malware analysis — malicious · b058fcc16446464c

MALICIOUS

PDF

1.85 MB

MD5: ac4a484bb27e08433f822d4120291be4 SHA-1: 8c0ac1bf6e1a41da170a09c655795fdb31a6badc SHA-256: b058fcc16446464c0aa94edabbc98cfd87d5d2ac2f9e3009b11a3aff96ed53b7

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and utilizes the CVE-2010-2883 exploit targeting Adobe Reader's CoolType SING font parsing. The presence of JavaScript streams and the specific exploit indicate an attempt to compromise the user's system upon opening the document. The exploit likely facilitates the execution of further malicious code.

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` `fa43b6cfd34e74adf939d2b4d0e928235e18a0760596e06740a9b8dc5cb8b1a2`	pdf-javascript-stream	PDF /JS object 29 at offset 0x1D66B6	14989 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 0x1D44	1242 bytes
`javascript_obj0039_002.js` `d8bbcc5984e6bec8996e18881fad0486ff520c9b9f03ee0fb9694ddfc412340d`	pdf-javascript-stream	PDF /JS object 39 at offset 0x2316	1572 bytes
`stream_004_off00000cd0.bin` `69e17a0038b9273e6d005ef52313a832cb41b9cf9713d6134d0cf9f2e59298a7`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xCD0	434 bytes
`font_00_sfnt_off00001313.bin` `fc85f44193ccd402987935418c4f5fdf6802c96450b789e7fce04f9791933021`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1313	7965 bytes
`font_01_sfnt_off00001ac5.bin` `1e827515a464087cdace63e3578c118b45a657ed40cdbb9de7eead35c9b593ba`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1AC5	7965 bytes

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