PDF malware analysis — malicious · bfc2177f5503b9fe

MALICIOUS

PDF

584.1 KB

MD5: 1eb7c2c88bf5bc8b2647f7f2cb755340 SHA-1: 1ad2c4bc4d4dd86b3aaff471832b3b7b0986c812 SHA-256: bfc2177f5503b9feaae7c57fe882c34d0a07fda265bec0b3c1a5ee21bb119e06

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript and is flagged for exploiting CVE-2007-5659, which involves the `Collab.collectEmailInfo` function. This indicates an attempt to execute malicious code upon opening. The presence of multiple JavaScript files and a U3D-related artifact suggests a multi-stage attack designed to download and execute further payloads.

Heuristics 6

Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED

PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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.
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 12

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0031_000.js` `9c67560e8c63b720885d3efc1627b844b86a6ec08e99e5b65a22eae832045756`	pdf-javascript-stream	PDF /JS object 31 at offset 0x2C939	431 bytes
`legacy_pdfkit_stage_000.js` `6b40fb1457415fa054c26e7db3cacb471728859c2745b2e3f03daeb2934d2ba7`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2805E	13560 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `3231766995ec5688ccbd8ed4dd1930b55e240cde2d4e48ed3edc271a3a28c6e5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2805E	5723 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`icc_00_off0007d506.icc` `2b3aa1645779a9e634744faf9b01e9102b0c9b88fd6deced7934df86b949af7e`	pdf-icc-profile	PDF ICC profile at offset 0x7D506	3144 bytes
`font_00_sfnt_off00000e5a.bin` `afeb9e1e920aae3aca3f295f1bbccba46b16423dac14b1b5fde4b661de9198cc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE5A	46764 bytes
`font_01_sfnt_off00008483.bin` `5f96e1e90c4ef56487c91d02c05141dca0967f8e2bbd5d67be6c4f381f0afa79`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8483	62160 bytes
`font_02_sfnt_off00011b6b.bin` `d375c22ace40f0b973d7308d85023b2e0e49d40dc51da45552d116868346475e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11B6B	37232 bytes
`font_03_sfnt_off000166cd.bin` `b661c2e877dd6b7625208ae148d736aedb24eda2d4f014262cbb7f958f538ca0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x166CD	71216 bytes
`font_11_sfnt_off0006daec.bin` `8b62f203a4ab5c2ac76368029c584b4fa12fffc17f3b6e4e43a9997416807d21`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6DAEC	11156 bytes
`font_12_sfnt_off00072d9f.bin` `6cf6df6beee88aa138f821122d0c1969b348cebe09cafe5b5f6a7eb8c27107a0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72D9F	32640 bytes
`font_13_sfnt_off000875ef.bin` `95592346b00d039686aa3d7e22eae3d52b011e7e842a5c123f73e89ea766cd35`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x875EF	22628 bytes
`u3d_00_off000214e6.bin` `be9b6f51ccc10ed67099a2e70bdc0d7433f445b059ca7dff9f11d5199e632bb6`	pdf-3d-stream	PDF U3D 3D stream at offset 0x214E6	27444 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.

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