PDF malware analysis — malicious · dbabb5728c3f18d3

MALICIOUS

PDF

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

MD5: 706d1cbfe49aa1587f73c1f01dcace7b SHA-1: ce501ba9b81b0e9d2cbe69f6d0cb4023f98b3f8b SHA-256: dbabb5728c3f18d33b889c96cb16a9c06bfa8220f025db071e807feeff9b9d39

78 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The critical ClamAV heuristic firing indicates this PDF is recognized as a known exploit, specifically 'Pdf.Exploit.Agent-36874'. The presence of an XFA form and an AcroForm button with an action trigger further suggests malicious intent, likely to trigger an exploit. The extracted file 'stream_001_off000008ed.bin' is also flagged as a suspicious artifact, potentially containing the exploit payload.

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` `e89193dbb4afb645ad7881b5dc6828e79f0ca9c7da3d5dd69e5898cd6153c346`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8ED	1401 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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