PDF malware analysis — malicious · aa3daa0d026bad42

MALICIOUS

PDF

783.0 KB Created: 2010-09-11 23:35:31 Authoring application: Advanced PDF Repair at http://www.datanumen.com/apdfr/

MD5: 7ce65e9f637e70084d68e75aa4689880 SHA-1: 6b1fc1e98e556b3b52619e27e2f0d3246dd221ec SHA-256: aa3daa0d026bad42523d25333fc1ae2d7c174c70ae295b37b360d15c0bcf6339

94 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file exhibits multiple heuristic firings related to embedded JavaScript and suspicious PDF structures, including an embedded secondary PDF. The presence of JavaScript actions and streams strongly suggests an attempt to execute malicious code. While the specific payload is not immediately clear from the static analysis, the overall pattern points to a malicious PDF designed to exploit vulnerabilities or download further malware. The embedded URL is likely part of the lure or infrastructure.

Heuristics 7

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.
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.
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.datanumen.com/apdfr/

Extracted artifacts 8

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0040_000.js` `a4c81d522e684fc51b77a224dadfc0bc99dcaf2031825c8a4560928ecfec3f71`	pdf-javascript-stream	PDF /JS object 40 at offset 0x20DA	12401 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`stream_001_off00000aef.bin` `0f910ffeec733940f6ba1ae41dc6770eab5d615c05bccc95197878b62c8dc45f`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xAEF	2928 bytes
`stream_002_off00000e4d.bin` `29cf1edfedd4f27f3c450646c5dc2510e6bf9e63eee1cd436ac517a465a2e1bf`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xE4D	1650 bytes
`stream_003_off000011bc.js` `672d461752be4a970c8e9721164ce074d252b55d09d46cc09259d2ce4fc09f7f`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x11BC	1546 bytes
`stream_010_off00005a6c.bin` `fe122a09d8a0444608fdc5a6f4981a2dbd469f5bbfacb4bdd327c28ccc343e13`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5A6C	149 bytes
`stream_011_off00005b20.bin` `4a60a9864cdf7382475d51051a03fdc43b32c31eb508893ccfccece34957f9f1`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5B20	56 bytes
`font_00_cff_off000083e8.bin` `ea8f409c7366ed46eeb553aa7b404f04641f482ba88463fbe253da60be5787e5`	pdf-font-stream	PDF embedded font (cff) at offset 0x83E8	1138 bytes
`polyglot_child_pdf_off0003c00f.pdf` `fe62c9c4011d1636e38d05de8e59af8334ac31e31b2d833bfeff63eecde9d7db`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x3C00F	556059 bytes

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