PDF malware analysis — malicious · 575574ba71c6d805

MALICIOUS

PDF

5.5 KB Created: sdtres

MD5: 4b46ebc37f5d14256aaf6fae6208718d SHA-1: f30f24bced619bb582067c89822fb59e7b56d88a SHA-256: 575574ba71c6d805d8cb27a99d1dc1063fc94047b7bee2280855a6b53523679b

216 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1566.002 Phishing: Spearphishing via Service T1566.003 Phishing: Phishing via Service

The file is a PDF document that contains an embedded XFA form, which is leveraged to exploit CVE-2010-0188 in Adobe Reader. ClamAV detections confirm this exploit is present and malicious. The embedded artifact is also flagged by ClamAV as malicious. The exploit targets a known vulnerability, indicating a delivery mechanism for a secondary payload.

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.
ClamAV: Pdf.Exploit.CVE_2010_0188-10 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.CVE_2010_0188-10
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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.
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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0011.bin` `aab441d5225a69df5ea552ee7a485c637c98a357ecd9c9ebd92f54f429131bbd`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x45D	33165 bytes
Detection ClamAV: Pdf.Exploit.CVE_2010_0188-10 Obfuscation or payload: unlikely

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