Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff2aca9bfd24a2cd…

MALICIOUS

PDF

39.8 KB Authoring application: LibreOffice
MD5: 0bf93d84c6e1c64eb32e93f590447346 SHA-1: 0a066855e77d6938632ddba68d091e54f85c24f3 SHA-256: ff2aca9bfd24a2cd585f92e610d06f30e77e3e13bfbf783f5b7e0f995a98d143
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malware. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The document body itself is heavily corrupted and unreadable, providing no direct clues about its purpose beyond the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://northernillinoispainting.com/uploads/1/3/0/3/130313305/gatilasapuf.pdf
    • http://joekreydt.com/uploads/1/3/0/5/130541402/regonatawumetus_kexowubopek_netadokise_rawofaj.pdf
    • http://adrianbyrdcounseling.com/uploads/1/3/0/2/130289379/4574748.pdf
    • http://rockstarsproductions.com/uploads/1/3/0/7/130776148/5690786.pdf
    • http://shine2bright.com/uploads/1/3/0/4/130435721/3499585.pdf
    • http://corningfishandgame.org/uploads/1/3/0/3/130313433/vebowawuf.pdf
    • http://nomadicfield.com/uploads/1/3/0/6/130621614/4507054.pdf
    • https://ropubitapuri.weebly.com/uploads/1/3/0/3/130324289/dejaru.pdf
    • http://kow.bitimecash.com/uploads/2020/01/28/5096401.pdf
    • http://catalinapools.net/uploads/1/3/0/6/130620451/fadixenot_kadotupuxokox.pdf
    • http://sacredsecretskincare.org/uploads/1/3/0/6/130620955/fumaz.pdf
    • http://thesingbabysingshow.com/uploads/1/3/0/7/130776212/130776212.html#difference+between+autocad+civil+3d+and+autocad

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001352.bin
6d43502963d8bcde1775d0a8adde8e49ce2b43a1a23b3b63ef9e850353cf9da6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1352 9104 bytes
font_01_sfnt_off000058f7.bin
afd8868629b61d85ec32a8a0de1ca84da82d48156cdd7447d7c4f51403cf5149		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58F7 5244 bytes

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