PDF malware analysis — malicious · b7c5d7d4a35944cc

MALICIOUS

PDF

181.5 KB

MD5: da8406d2327f89b58329dbb63c7c085d SHA-1: 8bb12b67cd1f78687029f3bbdc57c01b73971a68 SHA-256: b7c5d7d4a35944ccf46463b105e7f1b07fb98984a2a5297fbc1ccb8e7236618c

168 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

This PDF file contains embedded JavaScript and is flagged as malicious by ClamAV with the signature Win.Trojan.Quarian-4254605-2. The critical heuristic firing for CVE-2010-0188 indicates an exploit targeting Adobe Reader's LibTIFF component. The embedded JavaScript likely serves to download and execute a secondary payload, a common technique for malware delivery. The presence of an embedded file further supports the payload delivery hypothesis.

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: Win.Trojan.Quarian-4254605-2 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Quarian-4254605-2
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 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.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0001.bin` `004d27fa6e0ecd5fc649867c7dabb4acdfeb4f8d48a8697af05cb4da6b6d16c3`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x275	25249 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).

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