PDF malware analysis — malicious · d7bccc8cf8b37811

MALICIOUS

PDF

6.0 KB Created: 2012-10-18 11:51:53 Authoring application: kkiiia=unescape(nehet.replace(/jjsjff/g, niittu.charAt(4

MD5: 47e8e1cf0327ef50513623de402a89df SHA-1: 9aa6f8f5d23dc9f5b080dac6457e64401c8ce9f7 SHA-256: d7bccc8cf8b37811cb406e35922b0b3e526e8f01048dac1669cd43243a2af777

140 Risk Score

Malware Insights

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA image handling. This exploit is designed to execute arbitrary code upon opening the document. The file also contains embedded artifacts, suggesting it's a dropper for further malicious activity. No specific family could be identified.

Heuristics 7

Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188

PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0006.bin` `c09ae753ce4962d3d447f6ccdc05236eb9238277b66775a82f085f0fd265a84d`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x257	130 bytes
`embedded_file_obj0016.bin` `8e27c58f949385eb672303908b8ab7f4fbd043f961b02727964bafd8de2f6d1a`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x4E1	157 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`embedded_file_obj0001.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x5D2	77 bytes
`embedded_file_obj0018.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 18 at offset 0x67C	56 bytes
`embedded_file_obj0004.bin` `d4d42ce0e2becf87abd24a70143a95b67bb3633a77c6bfce0204f49023ee7cd4`	pdf-embedded-file	PDF EmbeddedFile object 4 at offset 0x783	201 bytes
`embedded_file_obj0015.bin` `ed4fa2199048d430a7eecdda56d6bd65deb2a6ba7bab8886a857519877d350b0`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0xADE	35108 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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