Malicious PDF — malware analysis report

Static analysis result for SHA-256 24fcf3dc70a2c102…

MALICIOUS

PDF

2.02 MB Created: 2007-08-29 12:50:05 -07:00 Authoring application: Adobe InDesign CS3 (5.0) (via Adobe PDF Library 8.0)
MD5: 81ce25ec79d157b38f8b0465c9b1cbb3 SHA-1: cc329daceed30a3dc5fbea15c01059f55ff8b65b SHA-256: 24fcf3dc70a2c1021a30a1fb94cb70cc44dd0f6425db3a3d9aea896b3c65e52f
444 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.003 Windows Command Shell T1105 Ingress Tool Transfer

This PDF file contains JavaScript and a launch action that targets cmd.exe, indicating an attempt to execute arbitrary commands. The critical heuristic CVE_2010_1240 confirms this exploit vector. Furthermore, an embedded file declared as a PDF was detected as a Windows executable by ClamAV, suggesting it is a secondary payload. The embedded JavaScript and launch action work together to drop and execute this payload.

Heuristics 12

  • Adobe Reader Launch action command execution critical CVE exact CVE_2010_1240
    PDF uses the Adobe Reader/Acrobat Launch action pattern associated with CVE-2010-1240: cmd.exe is invoked with attacker-controlled parameters, paired with an embedded/exported payload.
  • Launch action critical PDF_LAUNCH
    PDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
  • /Launch action target: cmd.exe critical PDF_LAUNCH_COMMAND
    PDF /Launch action specifies an executable target with parameters '/Q /C %HOMEDRIVE%&cd %HOMEPATH%&(if exist "Desktop\\1.pdf" (cd "Desktop"' — references a known-dangerous executable (cmd, PowerShell, etc.).
  • Embedded attachment masquerades: declared document, content is windows-executable critical PDF_EMBEDDED_FILESPEC_CONTENT_MISMATCH
    An /EmbeddedFile attachment's declared filename extension or /Subtype MIME type contradicts the magic bytes of its decompressed content. The attachment is declared as a benign document or image but the bytes are an executable or executable-bearing archive. This is a deliberate deception used to hide droppers in PDF attachments and is a generic indicator of embed-and-drop weaponisation, independent of any specific CVE.
  • ClamAV: Pdf.Tool.Agent-1388586 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Tool.Agent-1388586
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • /Launch action paired with attachment-dropping JS API high PDF_LAUNCH_PLUS_DROPPER_JS
    PDF combines a /Launch action with a JavaScript API call that writes or opens an attached/external resource — the canonical shape of the CVE-2010-1240 /Launch + exportDataObject family. Benign PDFs do not pair these surfaces; the combination indicates a drop-and-execute chain regardless of the specific JS API knobs or /Launch target.
  • Unusually high stream count medium PDF_MANY_STREAMS
    PDF contains 501+ stream objects — may indicate heap spray or heavy obfuscation
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/photoshop/1.0/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/exif/1.0/
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://ns.adobe.com/xap/1.0/g/img/
    • http://ns.adobe.com/xap/1.0/t/pg/
    • http://ns.adobe.com/xap/1.0/sType/Dimensions#
    • http://ns.adobe.com/xap/1.0/sType/Font#
    • http://ns.adobe.com/xap/1.0/g/
    • http://ns.adobe.com/illustrator/1.0/
    • http://ns.adobe.com/xap/1.0/sType/ManifestItem#

Extracted artifacts 18

Files carved from inside the sample during analysis.

FilenameKindSourceSize
1.pdf
20000b555af13023d1db1efd6a6f6a7173d4146ef9c407e50ff59c4ef78e279d		 pdf-embedded-file PDF EmbeddedFile object 844 at offset 0x1FAD5E 61440 bytes
Detection
ClamAV: Win.Trojan.Swrort-5710536-0
Obfuscation or payload: unlikely
javascript_obj0845_000.js
6a59dd3b366f3db80f454a191b81fd87c67c56e15006b58e6d6da19c8de4eb77		 pdf-javascript-stream PDF /JS object 845 at offset 0x2039A4 50 bytes
icc_00_off001b2c72.icc
2b3aa1645779a9e634744faf9b01e9102b0c9b88fd6deced7934df86b949af7e		 pdf-icc-profile PDF ICC profile at offset 0x1B2C72 3144 bytes
font_00_cff_off0005bff0.bin
40292c55e37b80da8426dce44de101d7b84a44eaea5401eb750fb8becdfa881c		 pdf-font-stream PDF embedded font (cff) at offset 0x5BFF0 3667 bytes
font_01_cff_off0005ce96.bin
496e040de93e83fb1f177bfe5aa146ff73a2acc2aa738b748efbc814650520d6		 pdf-font-stream PDF embedded font (cff) at offset 0x5CE96 751 bytes
font_02_cff_off0007bdb0.bin
8dd9fab705f8455ad6f52707db79c9d9bf3f472acb67aa32febe1d09443167db		 pdf-font-stream PDF embedded font (cff) at offset 0x7BDB0 1159 bytes
font_03_cff_off0010ae70.bin
0c82662347fa013b646f0a1c753fbfa0fcdf010ce6b1f14022473a21b319c81e		 pdf-font-stream PDF embedded font (cff) at offset 0x10AE70 530 bytes
font_04_cff_off001a55c3.bin
5e83f0ea0b203a21182b3b25d0ef1df4f8f1ba6788d96ebb8308e55fc8169fca		 pdf-font-stream PDF embedded font (cff) at offset 0x1A55C3 6634 bytes
font_05_cff_off001a7b11.bin
09ccbaf7ee43f6e2e09276f96859d560399718bb95ff8543bcf941f79842fb0f		 pdf-font-stream PDF embedded font (cff) at offset 0x1A7B11 3706 bytes
font_06_cff_off001a9560.bin
f8f5532f993be14357a90aa9ed23eab955f1a0fd4625ee5eda2043aa86cd2389		 pdf-font-stream PDF embedded font (cff) at offset 0x1A9560 4243 bytes
font_07_cff_off001ab345.bin
7e173796f77434de68452df92ca372726d499937fe5820dca217fe72ce3a543c		 pdf-font-stream PDF embedded font (cff) at offset 0x1AB345 383 bytes
font_08_cff_off001ab502.bin
85ec5a3a2c4478e41ccd7713590317b05d15f3ff60339a40d2bfdbdb57e9db1c		 pdf-font-stream PDF embedded font (cff) at offset 0x1AB502 3743 bytes
font_09_cff_off001bcde1.bin
c3ac3b92d77082f07cd0ab86686a57d09a635bb5f70567119dce69eee25dd6a8		 pdf-font-stream PDF embedded font (cff) at offset 0x1BCDE1 1061 bytes
font_10_cff_off001ccc94.bin
14d253209cf8c6565a80d83ea7a42701f424c344324e23c49ffb89de7bdf03cc		 pdf-font-stream PDF embedded font (cff) at offset 0x1CCC94 5529 bytes
font_11_cff_off001cdebe.bin
6aebe439a7ee470528a75abe2ec5259121a58c0cc62ba46793ba523967befb4a		 pdf-font-stream PDF embedded font (cff) at offset 0x1CDEBE 6000 bytes
font_12_cff_off001cf2a0.bin
f531cbbcb29f5e6fe50c25587ad0db65577feadd1277d2fadbe5341e0afe9a12		 pdf-font-stream PDF embedded font (cff) at offset 0x1CF2A0 9024 bytes
font_13_cff_off001d0ff7.bin
a6989d782e4b33e93b90012bc3dfdd34e6b9ed220e70f6d720c29aaec12ff3cd		 pdf-font-stream PDF embedded font (cff) at offset 0x1D0FF7 4320 bytes
font_14_cff_off001d1ff7.bin
ed8f28c573776e8b5ef0fea84660d75b6e6cc8b0ea22458d2d8c9633fd0b79b6		 pdf-font-stream PDF embedded font (cff) at offset 0x1D1FF7 3653 bytes

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