PDF malware analysis — malicious · b46fe8666c290776

MALICIOUS

PDF

13.3 KB

MD5: 627a768b21a702781185f89299897690 SHA-1: 3639f2e5e10a8ecd209d9523cff21142a221c659 SHA-256: b46fe8666c290776c303780060f15654ab8b23ef9098ef8cc46ebd1dcff43a2c

204 Risk Score

Malware Insights

The PDF file contains a critical vulnerability exploit for CVE-2010-0188, targeting Adobe Reader. Heuristics indicate the presence of XFA forms and embedded JavaScript, suggesting the document is designed to trigger this exploit upon opening. The embedded JavaScript, although partially obfuscated, likely facilitates the execution of a second-stage payload. The file also contains multiple embedded binary objects, which are common for exploit delivery.

Heuristics 8

Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188

PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
ClamAV: Pdf.Exploit.Agent-36962 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36962
Suspicious extracted artifact high 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.
String.fromCharCode medium PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically (matched inside decoded stream)
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://www.xfa.org/schema/xfa-locale-set/2.1/

Extracted artifacts 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0041.bin` `c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb`	pdf-embedded-file	PDF EmbeddedFile object 41 at offset 0x26D7	85 bytes
`embedded_file_obj0042.bin` `dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91`	pdf-embedded-file	PDF EmbeddedFile object 42 at offset 0x2789	1029 bytes
`embedded_file_obj0043.bin` `d79308b0e06f22ae21b31645f5d8041321f8463367ba683e40e8f49c50313ef4`	pdf-embedded-file	PDF EmbeddedFile object 43 at offset 0x29A2	1667 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`embedded_file_obj0044.bin` `3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169`	pdf-embedded-file	PDF EmbeddedFile object 44 at offset 0x2D68	144 bytes
`embedded_file_obj0045.bin` `10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275`	pdf-embedded-file	PDF EmbeddedFile object 45 at offset 0x2E14	77 bytes
`xfa_metadata_stage_000.js` `4a7e0403ed392ad3241ae2457e555b77a0db7ce2becd8a45852a009150f90bb7`	deobfuscated-js	XFA /keywords base-29 decoded JavaScript (raw) at offset 0xDEB	2181 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).

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