PDF malware analysis — malicious · e20a60db22c4480a

MALICIOUS

PDF

181.2 KB Created: 2010-05-18 02:44:35 +08:00

MD5: 96e88e94519656d196c0ecdc7f8ef64e SHA-1: 6374797c85d3058797af447860a1d3b195d4be9b SHA-256: e20a60db22c4480a5234a3bbb1dff10f775daab17837f5c6945140008b4d0c27

74 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

This PDF file exhibits multiple indicators of malicious activity, including embedded files, JavaScript, and RichMedia (Flash) content. The presence of 'SnowDisplay.swf' as an extracted artifact strongly suggests the document is designed to deliver or execute a Flash-based exploit or payload. The embedded JavaScript further supports this, likely used to trigger the exploit or download additional malicious content. The benign reputation of the URLs does not detract from the malicious nature indicated by the embedded objects and heuristics.

Heuristics 7

RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector (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
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)
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic (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/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://purl.org/dc/elements/1.1/

Extracted artifacts 14

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0049.bin` `89d4e3117ae2ff7ed2505b8ec12d6e0c11ae98e5825a09b8d952f850f6f7fcf9`	pdf-embedded-file	PDF EmbeddedFile object 49 at offset 0xE022	1560 bytes
`embedded_file_obj0050.bin` `d80006a945db7f9d6492ea0c8e1d51c45699b8af1359070585109a3a0d6af9e9`	pdf-embedded-file	PDF EmbeddedFile object 50 at offset 0xE309	5164 bytes
`embedded_file_obj0052.bin` `ddb337c1574afffe4e7d1907cc78681e2ac0edf7145a7b1bc8fd896b4e4be9e5`	pdf-embedded-file	PDF EmbeddedFile object 52 at offset 0xEB67	2860 bytes
`embedded_file_obj0053.bin` `4cb349134bdb5f1a1c03281df9b53128ebe947f235398a912a4f0a9f638b24d5`	pdf-embedded-file	PDF EmbeddedFile object 53 at offset 0xEEBD	200 bytes
`embedded_file_obj0054.bin` `fcfa5d840723a70c580703ad7100bb254bef11c51f7f121657362691e2198472`	pdf-embedded-file	PDF EmbeddedFile object 54 at offset 0xEFB1	835 bytes
`SnowDisplay.swf` `b8162b84acd4e45cd57b4d1d9938445a732935b25498d1806a9d5653e242ceee`	pdf-embedded-file	PDF EmbeddedFile object 135 at offset 0x186ED	79980 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 8.00, consistent with packed or encrypted content.
`embedded_file_obj0144.bin` `c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb`	pdf-embedded-file	PDF EmbeddedFile object 144 at offset 0x2CB7B	85 bytes
`embedded_file_obj0145.bin` `bdc730827949ff085e6c06182c3c9cb75f49736cc91e34091408a30efd338bb8`	pdf-embedded-file	PDF EmbeddedFile object 145 at offset 0x2CC30	11882 bytes
`embedded_file_obj0146.bin` `2fcf50e16f4d0d38b64fc560853e47af5b49aff48d2d6b8366483d769af031cb`	pdf-embedded-file	PDF EmbeddedFile object 146 at offset 0x2D0C4	697 bytes
`stream_045_off0000ffa0.js` `f574e4d51594d1a8fd22e125b109b827c437aa898edc78babb62dbb93f8744f8`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xFFA0	1532 bytes
`stream_046_off0001018c.js` `4a1aca004cf20431c9a66dce85404a6411a54d881a6c257882260ffc972a13eb`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1018C	870 bytes
`stream_052_off0002c7fe.bin` `a930848340b561d98d53299cb7adfad76ab300e17a688ce4d56cb7f09082f33e`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2C7FE	1030 bytes
`objstm_0148_00.bin` `23488685d57fbbc98ff7d7603dcc8ed166eba1a953c83e49582716aeee7d262b`	pdf-objstm-decoded	PDF /ObjStm 148 0 obj (inflated)	2141 bytes
`objstm_0169_00.bin` `1e5d0a35c3eab5d0a39ec44d84adffde16689519988ae7812f6fd34796d192a6`	pdf-objstm-decoded	PDF /ObjStm 169 0 obj (inflated)	443 bytes

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