Malicious PDF — malware analysis report

Static analysis result for SHA-256 928c75dec8b32642…

MALICIOUS

PDF

38.2 KB Authoring application: Pdftk
MD5: b88f3855bfe49124335df6bfc0b607ff SHA-1: 231b9ce9f879bcad56f3c0547532bde1ceab514c SHA-256: 928c75dec8b32642b2ba2c7dc37d64586eae4209eb494f581abce8b27ff93dea
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The sample is a PDF document that contains multiple external URIs pointing to other PDF files. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing. The document body references a sensitive topic ('Gosport war memorial hospital deaths report') to potentially entice users to click on the embedded links, which likely lead to further malicious content or exploits. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://mimibug.com/uploads/1/3/0/6/130620479/9e10e257f3f.pdf
    • http://montecristifinesouthamericanarts.com/uploads/1/3/0/2/130288707/94907.pdf
    • http://creatingtheconditionsfortransformation.com/uploads/1/3/0/2/130289244/c7ad2b.pdf
    • http://defiddesign.com.au/uploads/1/3/0/4/130483527/renerogedebugo_vusanariku_naruki.pdf
    • http://moabrecycles.com/uploads/1/3/0/6/130603842/menida-xekijevojob-kosaf-nolebitasexi.pdf
    • http://juliejesternewman.com/uploads/1/3/0/4/130435524/130435524.html#gosport+war+memorial+hospital+deaths+report

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001170.bin
1076f9362adc6445ed6b1a7c11d25dfb61c7bfda9a5e4fe0fcfbe974ac541be2
pdf-font-stream PDF embedded font (sfnt) at offset 0x1170 9052 bytes