PDF malware analysis — malicious · 448a86a3e469dfd8

MALICIOUS

PDF

11.0 KB

MD5: c55edc5a6407af244876f02fddccabe3 SHA-1: 16d51134763b373bd3cb1fc8b37b8d7f73f61d72 SHA-256: 448a86a3e469dfd81c8e27dac04d722f4f779a65cf9f05bea2df2688a2b02463

86 Risk Score

Malware Insights

MITRE ATT&CK

T1190 Exploit Public-Facing Application

The PDF file contains a critical heuristic indicating exploitation of CVE-2010-0188 via XFA form JavaScript. The extracted JavaScript is heavily obfuscated but appears to be designed to download and execute a second-stage payload. The presence of embedded files and an XFA form further supports this attack vector. The URL provided is likely benign, related to XFA schema, but the core malicious activity stems from the exploit and script.

Heuristics 6

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.
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
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.
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 0xEED	85 bytes
`embedded_file_obj0042.bin` `dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91`	pdf-embedded-file	PDF EmbeddedFile object 42 at offset 0xF9F	1029 bytes
`embedded_file_obj0095.bin` `73cb93375bf4c1f29a61750a7110e90d5d3f55f4e341941f7dc881ce2195b99d`	pdf-embedded-file	PDF EmbeddedFile object 95 at offset 0x11B8	13139 bytes
`embedded_file_obj0044.bin` `3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169`	pdf-embedded-file	PDF EmbeddedFile object 44 at offset 0x277F	144 bytes
`embedded_file_obj0045.bin` `10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275`	pdf-embedded-file	PDF EmbeddedFile object 45 at offset 0x282C	77 bytes
`xfa_base26_stage_000.js` `2f71e91e0d712dee4c3d8cfa2b9a54489b1fd267138aef6eab1c95599cabb87a`	deobfuscated-js	XFA base-26 decoded JavaScript (decompressed) at offset 0x1726	4428 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).

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