PDF malware analysis — malicious · a424d80e4533b8bf

MALICIOUS

PDF

591.5 KB Created: 2010-04-27 14:24:08 -08:00 Authoring application: Canon iR C5185

MD5: 3af628b1639ed0e38dd3a5e2a64d0def SHA-1: f688abd63e7d12c9946a5f9a8b6d743869056d21 SHA-256: a424d80e4533b8bf7c59c7ae359aca1516b9007459420fe928e7766a520a0e36

256 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1071.001 Web Protocols

This PDF file contains multiple embedded JavaScript streams and exploits known vulnerabilities, specifically CVE-2010-2883 (CoolType SING font exploit) and related indicators for CVE-2010-0188. The presence of JavaScript actions and unescape calls strongly suggests an attempt to download and execute a secondary payload. The polyglot nature and embedded PDF further indicate a complex delivery mechanism. The extracted JavaScript files and the embedded PDF are key indicators of this malicious activity.

Heuristics 12

Adobe Reader CoolType SING font exploit — CVE-2010-2883 critical CVE likely CVE_2010_2883

PDF embeds a TrueType/OpenType font with an actual SING table and pairs it with JavaScript heap-spray shellcode. This matches the public Adobe Reader CoolType SING exploit shape for CVE-2010-2883.
CCITTFaxDecode + active content — LibTIFF CVE-family indicator high CVE related PDF_CCITT_CVE_2010_0188_RELATED

PDF uses /CCITTFaxDecode together with JavaScript, XFA, or RichMedia indicators. This matches the delivery pattern for Adobe Reader LibTIFF/CCITTFax parser exploit families, including CVE-2010-0188, but does not prove the exact malformed TIFF primitive.
Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGE

A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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
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.
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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/mm/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/xfa/promoted-desc/
- http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xci/2.6/
- http://www.xfa.org/schema/xfa-template/2.6/
- http://www.xfa.org/schema/xfa-locale-set/2.7/
- http://www.xfa.org/schema/xfa-locale-set/2.6/
- http://www.xfa.org/schema/xfa-form/2.8/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 9

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0026_000.js` `2f574ea0a0abb643798c6edf545b9a2510056a799ef48c2f415cee8e337043b2`	pdf-javascript-stream	PDF /JS object 26 at offset 0x47BF	9909 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`font_00_sfnt_off000149fa.bin` `422bc5698ba5d9d4818f6a2d8b3abca2f723e713b44a15c390139d2c976a1388`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x149FA	65932 bytes
`font_01_sfnt_off0001e85c.bin` `7e24ee16c8b09ee74d61445f29c3c0a95abfdf17fc1008606394f159dbd0c106`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1E85C	65932 bytes
`font_02_sfnt_off000286ba.bin` `57e24925bc6bdb98d38e8b4ba3b87f80f75c5e49ea9a522486790d7dc6848549`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x286BA	65932 bytes
`font_03_sfnt_off000324e1.bin` `1f068d668b316fcb46f0801be00137fb749cc7fda5ca15e442829d6c303d8f99`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x324E1	65932 bytes
`javascript_obj0026_000_1.js` `24538a7fa3a1155fe161e9f327fdbe22d3d0eb0ec25ad003e172c6baa820c3d6`	pdf-javascript-stream	PDF /JS object 26 at offset 0x47BF	8527 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0026_001.js` `95b474b42b4cf233de6ec2ed7eb97faff470381cb45cd64cc52589d497769194`	pdf-javascript-stream	PDF /JS object 26 at offset 0x47BF	3369 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`polyglot_child_pdf_off0003ca8f.pdf` `371dc53db8668425aea02d5ff47767e6d96f45f590294d943cd76676c6ff9dfb`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x3CA8F	357257 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 10 long base64-like blob(s).
`polyglot_child_pdf_off0008b1de.pdf` `3be6d60ed3ccdd7a6938e0a8978f74c0479740347639de466c698c0fda747399`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x8B1DE	35898 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.