PDF malware analysis — malicious · d8deba2c026bc27a

MALICIOUS

PDF

54.7 KB Created: 2012-09-22 12:17:45 +04:00 Authoring application: Wordpress.com (via mPDF 5.0)

MD5: fa43c791cda2b98acb6f3339b5a0c40e SHA-1: 7968ccf641166d6c9f31a1a4d2c665703053fedd SHA-256: d8deba2c026bc27a3ef5f30887a20b02808c3ed4bddf2ac1777a52ceac4bedda

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF contains obfuscated JavaScript that functions as a redirector to the URL http://globalsearchings.com/in.cgi?20. This indicates an attempt to lure the user to a malicious site, likely for further exploitation or credential harvesting. The ML classifier also flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9103

Heuristics 4

Obfuscated document JavaScript getURL redirector high PDF_JS_OBFUSCATED_GETURL_REDIRECTOR

PDF document-level JavaScript automatically calls getURL() on an HTTP(S) destination hidden behind percent escapes. The decoded path is a redirector-style endpoint such as /in.cgi or /go.php. This is malicious routing behavior rather than a PDF parser CVE.
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0038_000.js` `be63095b36d2a7a6bb2354eee6ea8f866bd67eb57984a872fcac65a5a9d7a885`	pdf-javascript-stream	PDF /JS object 38 at offset 0xD1E2	136 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long hex-escaped blob(s).
`stream_004_off00001784.bin` `ded1520fd68b91798ef4502ba393be29e6762be445da6319489229b957e57958`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1784	17756 bytes
`font_01_sfnt_off00004596.bin` `a8ed3909966b10c026f46212f55dce68c94667ce1ac039797d3ebfa1d644dacf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4596	17892 bytes
`font_02_sfnt_off000073d6.bin` `4ee4e439b16220e78b319060a3d86ba95cd4b8614522dd4fa1d4df274793c516`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73D6	18720 bytes
`font_03_sfnt_off0000a663.bin` `e3eeacc5b1f780160b253f248c40fb29e5cb6416f62dd9413712ea70c37f26c9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA663	18756 bytes

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