PDF malware analysis — malicious · fbe7abff0ea733a3

MALICIOUS

PDF

49.3 KB

MD5: d2651baa8765612e7d2b836c86c7b0d1 SHA-1: da6136e0c6825dea962d93e0b31227c0aa23b59f SHA-256: fbe7abff0ea733a31b49313b2d05ee4cf7e62d9fc20ee3175bc6bac09db760cb

214 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The critical heuristic firing for CVE_2010_2883 indicates exploitation of Adobe Reader. The PDF_EMBEDDED_SCRIPT_PAYLOAD and PDF_JAVASCRIPT heuristics, along with the extracted javascript_obj0006_000.js artifact, suggest that the PDF contains embedded JavaScript intended to download and execute a secondary payload. The ClamAV detection further confirms its malicious nature as a dropper.

Heuristics 9

Adobe Reader CoolType SING font exploit — CVE-2010-2883 critical CVE likely CVE_2010_2883

PDF embeds a TrueType/OpenType font with an actual SING table and pairs it with JavaScript heap-spray shellcode. This matches the public Adobe Reader CoolType SING exploit shape for CVE-2010-2883.
ClamAV: Pdf.Dropper.Agent-7327649-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7327649-0
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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.
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.
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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `af346ca25b68cfd222234afc9c3cb56724952dfe366f3180ecdda064b7ff51a9`	pdf-javascript-stream	PDF /JS object 6 at offset 0x348	6053 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`stream_002_off0000bbd7.js` `d1dfd457a2fdd3cec4091f689f39b85b35666aa5599ef3a8d5f9a80d1e2ce105`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xBBD7	1042 bytes
`font_00_type1_off0000c07b.bin` `c6bf78478c9c4dd5b3b86554d34c78f847f70af4118f9ff083c1fccf0e8e932b`	pdf-font-stream	PDF embedded font (type1) at offset 0xC07B	97 bytes
`font_01_type1_off0000c304.bin` `b749644b3e758e7335900ab2e7499eaa64b3a946849f1f8a0948287bdd96763d`	pdf-font-stream	PDF embedded font (type1) at offset 0xC304	144 bytes

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