PDF malware analysis — malicious · d83db3720ffd47bb

MALICIOUS

PDF

491.2 KB Created: ¶ïB¬½þIóH}´;îQ÷êäÒ¶)¦×ûUNa¤¥²à#äèG Authoring application: }ã^Ý¿g4lQZ½ðÁ¡´A["=¡³¾Ã¾Ég¢¹[U>7·, (via KÂíªè;ÎañÚÓ´e4Õ§ÀÓäR×9¤Â'),lðqßR&î)

MD5: e5c11ca58cd9347da82f7b91f6659aa1 SHA-1: 5e05c7779ccbbdfa82e9c70204091ef29425114f SHA-256: d83db3720ffd47bb99d664bec35f3266716b42f0fb884bc682377220cd620f6b

276 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file is identified as malicious by ClamAV and exhibits multiple high-severity heuristic firings. Notably, it contains embedded JavaScript and RichMedia (Flash) content, and is flagged for exploiting CVE-2011-2462 related to Adobe Reader's U3D/RichMedia parser. The presence of encrypted content with JavaScript further suggests an attempt to hide a malicious payload. The attack pattern is consistent with a PDF-based exploit delivery mechanism.

Heuristics 11

Adobe Reader U3D/RichMedia parser exploit critical CVE likely CVE_2011_2462

PDF combines U3D 3D content with RichMedia/Flash activation and JavaScript/action surfaces. This is the U3D RichMedia exploit document shape associated with CVE-2011-2462.
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: Pdf.Dropper.Agent-1506724 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-1506724
RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
Encrypted PDF carries /JavaScript — payload hidden from static analysis high PDF_ENCRYPTED_WITH_JS

PDF declares /Encrypt and also references an executable trigger (/JavaScript). Document encryption hides the JavaScript body and stream contents from static scanners — combined with auto-execution indicators this is a known evasion pattern used to deliver weaponised JavaScript that the analyst cannot inspect without the decryption key.
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE

PDF has 1 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser exited 1. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.

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