PDF malware analysis — malicious · 37a09ad210ed34d1

MALICIOUS

PDF

139.0 KB Created: 2010-06-11 11:09:09 +08:00 Authoring application: Writer (via OpenOffice.org 3.0)

MD5: 1fe2f4322d22bd4a056d9835c0078c85 SHA-1: 77b31dd45a05312b7e4da564ccb12410bc9e864e SHA-256: 37a09ad210ed34d12dae6e059b291e8ad7b01ef832997233aafc277998db67af

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file exhibits multiple suspicious characteristics, including embedded JavaScript, RichMedia (Flash), and a secondary embedded PDF. The presence of these elements, particularly the embedded JavaScript and the secondary PDF, strongly indicates an attempt to execute malicious code or exploit vulnerabilities. The 'POLYGLOT_CHILD_PDF_STATIC_TRIAGE' heuristic firing with a high score further supports this, pointing to a suspicious secondary PDF body. No specific malware family could be confidently identified.

Heuristics 8

Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGE

A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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. (matched inside decoded stream)
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. (matched inside decoded stream)
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload (matched inside decoded stream)
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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/xap/1.0/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/pdf/1.3/

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off00000372.bin` `72d82bd9d448ed7cfb55f363a1cc116f17cba235927fb4aaff4ecb5fa3e7e643`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x372	3386 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`objstm_0015_00.bin` `cbd11d2ce487f41cb2e696adc35306d2f3d38b7de6eab25b0e0d07f05d693f12`	pdf-objstm-decoded	PDF /ObjStm 15 0 obj (inflated)	912 bytes
`font_00_sfnt_off0001936d.bin` `dc26d0d48967a92853c480b4aec2ad5cea267a1000dac9cf426345c747588d37`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1936D	65204 bytes
`polyglot_child_pdf_off00015797.pdf` `21c451fcccfeb10d8de90f736fd1a488e615dc0a605b1709f612b6622e19ab55`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x15797	54422 bytes
`polyglot_child_pdf_off00021440.pdf` `0b1c923c8a0028794f3a3244dc498786746334f394e41678cc58ffbeb707d0a8`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x21440	6125 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.