PDF malware analysis — malicious · b6b4154fc08ad892

MALICIOUS

PDF

6.3 KB

MD5: 8996761ac98218af9a6f8020910e781e SHA-1: 7eee08030933ec1d579d54110b32cf777a4fb03f SHA-256: b6b4154fc08ad89224509979da2deaa470a3ee03869ec84c79a821070f9807be

224 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and exploits CVE-2014-0496 via app.addToolButton/removeToolButton. The embedded JavaScript is obfuscated and likely responsible for downloading and executing a second-stage payload. The presence of multiple embedded PDF files suggests a multi-stage infection process.

Heuristics 11

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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
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.
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
Remote GoTo action info PDF_GOTO_REMOTE

PDF has GoToR/GoToE actions that reference sibling document files — typical of multi-part document bundles
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 7

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0003_000.js` `4732fce79f7a2910688292544fb1616978d9caede22f1f5093911e2f46f7b23d`	pdf-javascript-stream	PDF /JS object 3 at offset 0x9A	8191 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 13 eval/decoder/string-building token(s).
`stream_000_off00002449.js` `d1dfd457a2fdd3cec4091f689f39b85b35666aa5599ef3a8d5f9a80d1e2ce105`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2449	1042 bytes
`font_00_type1_off000028e5.bin` `c6bf78478c9c4dd5b3b86554d34c78f847f70af4118f9ff083c1fccf0e8e932b`	pdf-font-stream	PDF embedded font (type1) at offset 0x28E5	97 bytes
`font_01_type1_off00002b6c.bin` `b749644b3e758e7335900ab2e7499eaa64b3a946849f1f8a0948287bdd96763d`	pdf-font-stream	PDF embedded font (type1) at offset 0x2B6C	144 bytes
`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

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