PDF malware analysis — malicious · a5cd6d8e6faee741

MALICIOUS

PDF

136.8 KB Created: 2011-09-08 05:03:17 Authoring application: FPDF 1.6

MD5: 4762491e224bbb2f6a69325b9d082c2d SHA-1: 0d49af483aaea0a214b88e5c28ec95c6b0b8d714 SHA-256: a5cd6d8e6faee74165981d3b3f517946562ca045f392bad2d7923655246f2f70

78 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The file is a PDF document identified by ClamAV as Pdf.Exploit.Agent-36874, indicating a known exploit. The presence of XFA forms and AcroForm buttons with action triggers suggests the document is designed to interact with the user and potentially trigger an exploit. An embedded, decompressed PDF stream was also found, further supporting the exploit delivery mechanism.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36874 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36874
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_001_off000008ed.bin` `26c0363f48b8dda65c157795e0c21afd74ceecf56dd622339715d96c9d9a7e5f`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1442 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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