Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2dc5033fcb899c5…

MALICIOUS

PDF

37.4 KB Authoring application: LibreOffice
MD5: 0adce878d8cc0fb3bfaae205a117c75e SHA-1: e77d4aedd228152fec7a9f6aa92f351d1fd8cb77 SHA-256: f2dc5033fcb899c511900775d840023241b2bda4666a04a3be2748890c66811f
92 Risk Score

Malware Insights

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

The PDF contains multiple external URIs pointing to other PDF files and an HTML file, suggesting a distribution mechanism for further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent, likely phishing or a scam. The document body, though heavily obfuscated, contains references to 'Cymbalta yeast infections', which is a common lure tactic to entice users to click on malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://hipsterleaks.com/uploads/1/3/0/5/130538988/7471a9.pdf
    • http://sawodo.site-developer.ru/uploads/2020/01/29/d7d75a0670bda5b.pdf
    • http://mpwealthmarketing.com/uploads/1/3/0/2/130289365/887190c59db.pdf
    • http://amandacake.com/uploads/1/3/0/5/130588225/xanapuvesuduz_mupivuji.pdf
    • http://agroecologyinternational.org/uploads/1/3/0/5/130551526/130551526.html#cymbalta+yeast+infections

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000100d.bin
d179e567c1786e8340faa8eca5faebc8eca0682056c22b3e96dfa6b89dbd6d0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100D 8044 bytes

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