PDF malware analysis — malicious · bfb215a268c21078

MALICIOUS

PDF

45.5 KB

MD5: d3398cf3469257520bf6347e00a247a6 SHA-1: e672e75c083eb664dede4016339d04f9ad78f261 SHA-256: bfb215a268c2107885365f78f833ea193fac36700e313b1cdc3ca222aa2202b0

194 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains multiple indicators of malicious activity, including a critical CVE-2010-2883 exploit targeting Adobe Reader's font parsing. Embedded JavaScript actions and streams are present, suggesting the execution of malicious code. The presence of unescape() calls and embedded script payloads further supports the conclusion that this PDF is designed to download and execute a secondary payload, likely leveraging the identified exploit.

Heuristics 9

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.
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
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
AcroForm button with action trigger low PDF_ACROFORM_BUTTON

PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
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 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0001_000.js` `f88c36c04e4830841548564f5802549747532ea9633bdfd933d40fba6517e9b3`	pdf-javascript-stream	PDF /JS object 1 at offset 0xA	2462 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`stream_002_off0000acd9.js` `d1dfd457a2fdd3cec4091f689f39b85b35666aa5599ef3a8d5f9a80d1e2ce105`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xACD9	1042 bytes
`font_00_sfnt_off00000f1f.bin` `79054e2899f6afc70cace97acc497b797428ecef2ca3e6b9ce605e2f61685c8a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1F	65932 bytes
`font_01_type1_off0000b17d.bin` `c6bf78478c9c4dd5b3b86554d34c78f847f70af4118f9ff083c1fccf0e8e932b`	pdf-font-stream	PDF embedded font (type1) at offset 0xB17D	97 bytes
`font_02_type1_off0000b406.bin` `b749644b3e758e7335900ab2e7499eaa64b3a946849f1f8a0948287bdd96763d`	pdf-font-stream	PDF embedded font (type1) at offset 0xB406	144 bytes

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