Malicious PDF — malware analysis report

Static analysis result for SHA-256 7552b487ec185f59…

MALICIOUS

PDF

225.3 KB
MD5: 19fdafa864edffb127d6a72c136dc253 SHA-1: b97c3818601c0eba6f4719f5e3a2ed03aef5cfc4 SHA-256: 7552b487ec185f5983d0fad17eb7a827f14505dfd3d23a1413e0add256a48cc6
146 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The sample is a PDF document that leverages embedded JavaScript and XFA forms to exploit the CVE-2010-0188 vulnerability in Adobe Reader. This exploit is designed to execute arbitrary code, which is a common technique for downloading and running further malicious content. No specific malware family could be identified.

Machine Learning

  • Nyx PDF Classifier clean score 0.1920

Heuristics 6

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains XFA image data with an inline crafted TIFF payload and shellcode/delivery markers. This is the data-bound variant of the CVE-2010-0188 Adobe Reader LibTIFF/XFA exploit shape.
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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)
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.4/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin
10cc41d851989f20c09532d48c93f582992b29a807c66e7f6b3411f11e489421		 pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x54 412582 bytes

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