PDF malware analysis — malicious · b6c7373c1da2530b

MALICIOUS

PDF

5.0 KB

MD5: a23cccc13bbadfff48bc6b63fac94c7d SHA-1: 369d94e09570e3fd7b797b1b72767da98f4bf24c SHA-256: b6c7373c1da2530b4c24e59161c7c1a9f3b6c98be67b23b4f8ba29f3f0b51a23

106 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1566.002 Phishing: Spearphishing via Service

The sample is a PDF document that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms and LibTIFF image parsing. This exploit is designed to execute arbitrary code, indicated by the embedded file artifact. The document body contains obfuscated text, suggesting it's not intended for direct user interaction but rather to facilitate the exploit. The primary attack vector is likely phishing, where the user is tricked into opening a malicious PDF.

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.
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
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
ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85

ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0001.bin` `f495558bb829486081de785c7e6912ce7a25fad082fd6c4dee21b4c69ad1d291`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x7A	13557 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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