PDF malware analysis — malicious · 6a76a4b392510a6a

MALICIOUS

PDF

6.9 KB

MD5: d284ec46ad9851d487778637d429c184 SHA-1: 4054bb34e48aeaeef5a50dec20af68733c943bfe SHA-256: 6a76a4b392510a6ae29898830899433579645a334b086f6c02d62bad049a4026

284 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript that leverages the app.addToolButton/removeToolButton functions, indicating an attempt to exploit CVE-2014-0496. This exploit cluster is designed to achieve client-side execution. The document body contains a generic 'Who's there?' message, which is typical for phishing lures.

Machine Learning

Nyx PDF Classifier malicious score 0.9970

Heuristics 9

app.addToolButton/removeToolButton — CVE-2014-0496 critical CVE exact CVE_2014_0496

PDF JavaScript combines app.addToolButton() and app.removeToolButton() with heap-spray shellcode markers — the public Adobe Reader/Acrobat ToolButton use-after-free exploit shape for CVE-2014-0496. (matched in decompressed stream)
Embedded PDF child has suspicious static findings critical PDF_EMBEDDED_CHILD_STATIC_TRIAGE

PDF contains an embedded PDF stream whose extracted child matches suspicious or malicious PDF heuristics. Wrapper PDFs are commonly used to hide the actual exploit or lure payload from scanners that do not recursively inspect attachments.
PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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)
Remote GoTo action info PDF_GOTO_REMOTE

PDF has GoToR/GoToE actions that reference sibling document files — typical of multi-part document bundles

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`magellanic_venus_657.pdf` `f098877db7743761ae8a3591c73370a75db9c688eea2fbcfb4ae42076662165e`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0x36A	11600 bytes
`magellanic_venus_657_1.pdf` `48bb87feca1efede6a3e8399a9ff2fb1de82ff7c00d6917450063beede0f87e4`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0x36A	5098 bytes
`magellanic_venus_657_2.pdf` `b2095ab7e3910032302050b3dc9ca71d0d408905c1b309d179ede898f3eb54db`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0x36A	5758 bytes
`magellanic_venus_657_3.pdf` `b6b4154fc08ad89224509979da2deaa470a3ee03869ec84c79a821070f9807be`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0x36A	6422 bytes

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