Malicious PDF — malware analysis report

Static analysis result for SHA-256 84fbdaee61fe3547…

MALICIOUS

PDF

220.5 KB Created: 2010-03-03 03:42:28 +08:00 First seen: 2026-05-10
MD5: 17c622e7f6771925bfda830bd40300ff SHA-1: 077d31ae5ac0474b31b619c13d674df9cdbd44d9 SHA-256: 84fbdaee61fe3547609029c92c670ff22e9f23cabcf8ed53d2bf4a0b0e7f8a6c
160 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.1900

Heuristics 6

  • Adobe Reader XFA LibTIFF integer overflow — CVE-2010-0188 critical CVE exact CVE_2010_0188
    An XFA image field carries a TIFF whose IFD has a malformed tag that overflows the LibTIFF parser (CVE-2010-0188).
  • Suspicious extracted artifact medium 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 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 (matched inside decoded stream)
  • 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.
  • 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# In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xdp/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text
    • http://www.xfa.org/schema/xfa-form/2.8/In PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0121.bin pdf-embedded-file PDF EmbeddedFile object 121 at offset 0x146D2 85 bytes
SHA-256: c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb
embedded_file_obj0122.bin pdf-embedded-file PDF EmbeddedFile object 122 at offset 0x14787 11882 bytes
SHA-256: dbbbfdd785e9d2b256dd4ac2faa0002c3d0c522765699437326e7216e03af174
embedded_file_obj0123.bin pdf-embedded-file PDF EmbeddedFile object 123 at offset 0x14C5C 291 bytes
SHA-256: bb76e51bb8b760432fa497d467a6211dbad4e19a09c332250c9ac2b240d23f80
bin_adobeupdate.wav pdf-embedded-file PDF EmbeddedFile object 135 at offset 0x15F79 135183 bytes
SHA-256: 4c92fa78e09cab2a358daac5ceffdf9346faa05ad5524c474f53ba256037c0df
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.
xfa_image_rawvalue_000.tif pdf-xfa-image-tiff XFA image/rawValue TIFF payload near offset 0x14819 8642 bytes
SHA-256: 25781ddf220737893431f3c1f411905acf33a6a12a753e19d9e90b7e8e91a932
Detection
ClamAV: Win.Exploit.CVE_2010_0188-7
Obfuscation or payload: likely
Static shellcode analysis found candidate code region(s). Indicators: NOP sled

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