PDF malware analysis — malicious · 1b7584c9222e1081

MALICIOUS

PDF

27.0 KB

MD5: 08da26158b76ca38e0ddb740aaf9b4ff SHA-1: af10cc9b9bf348591c421afd11c6b62983930909 SHA-256: 1b7584c9222e1081fd4e7507d35348c991b86e662fc2fd0221f36dbe06c6bcec

220 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The PDF file contains an embedded XFA form that triggers the CVE-2010-0188 exploit in Adobe Reader. This exploit is designed to execute arbitrary code, and ClamAV detections confirm the presence of a dropper component. The deobfuscated JavaScript further suggests malicious intent, likely to download and execute a second-stage payload.

Heuristics 8

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

PDF contains XFA image data with an inline crafted TIFF payload and shellcode/delivery markers. This is the data-bound variant of the CVE-2010-0188 Adobe Reader LibTIFF/XFA exploit shape.
ClamAV: Pdf.Dropper.Agent-5303064-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-5303064-0
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.
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
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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0001.bin` `f389e147dcff4e8cd717c36e953fc5885a152537297e26e6c7c736cd953b099c`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x48	13370 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`acroform_b64_00.js` `5f4ab13a6dc11bc50c4af92ff2bc033530859a61a3093f38fbc4fee80db440e1`	deobfuscated-js	PDF AcroForm base64 (decompressed) at offset 0x559	8642 bytes
Detection ClamAV: Win.Exploit.CVE_2010_0188-7 Obfuscation or payload: unlikely

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