PDF malware analysis — malicious · 82c78977cebb3f7a

MALICIOUS

PDF

53.9 KB

MD5: eda04044704b55b9854398d465a14199 SHA-1: fbe80a4c83ca36dcc0c5d45a3d7e4f82d63d88d6 SHA-256: 82c78977cebb3f7a7640b89f74d63515893de99648af32584c2a10dba0fd7cce

216 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript and a Flash file (CVE-2010-1297.swf), both of which are flagged as malicious by ClamAV. The ML classifier also strongly indicates maliciousness. The presence of the CVE-2010-1297.swf suggests exploitation of a known Flash Player vulnerability, likely to download and execute a further payload. The embedded JavaScript streams are obfuscated, but the overall behavior points to a malicious exploit document.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 7

ClamAV: Pdf.Exploit.Agent-35955 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35955
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.
RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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
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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`AdobeSystem` `2c7ca4fbed7155ab780d5d0a2c60615cac253028b3c562f3641b8afa4a27e3ad`	pdf-embedded-file	PDF EmbeddedFile object 5 at offset 0x1B0	21285 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 8.00, consistent with packed or encrypted content.
`CVE-2010-1297.swf` `e00f8888a663b7605e1a74a39b06c4c4210174facea50eafd361d375f73abd1a`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x6956	26774 bytes
Detection ClamAV: Pdf.Exploit.Agent-35955 Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.
`javascript_obj0008_000.js` `8a216007da0cb35af0003dd45a8aa592326de89e12d67b36b3d5d5228bd7aeb0`	pdf-javascript-stream	PDF /JS object 8 at offset 0x555F	4901 bytes
`javascript_obj0008_001.js` `e70219b0dd5a3168d9f14aeccfea719341055a634aeca96374b54ca8a609803d`	pdf-javascript-stream	PDF /JS object 8 at offset 0x555F	3327 bytes

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