Malicious PDF — malware analysis report

Static analysis result for SHA-256 b48c2fa8170594f7…

MALICIOUS

PDF

37.4 KB Authoring application: Nitro PDF
MD5: 5efcca613beb59851bf12902e66f726a SHA-1: 860ef0030fa142cdf61cb68ecc29155692933279 SHA-256: b48c2fa8170594f73847ac322c979c41eeecabc05f5a6a9525159d32e0c2dd59
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing campaign. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports this. The document body contains numerous URLs, including the first one identified by the heuristic, which are likely used to redirect users to malicious sites. No scripts were extracted from this sample.

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://mynorthlakedemo.com/uploads/1/3/0/7/130739852/rikukarodefewon_gopagepag.pdf
    • http://millmaneyeassocaitesllc.com/uploads/1/3/0/6/130621481/nojalo.pdf
    • http://taranakitimebank.nz/uploads/1/3/0/5/130550940/gazamojivexanekoles.pdf
    • http://podrochim.online/uploads/2020/01/28/gapigunokiluzuk-kojusezufuji-dudagone-fifoxaxadomol.pdf
    • http://zingcomic.com/uploads/1/3/0/3/130379219/4080527.pdf
    • http://noclintonsnomore.com/uploads/1/3/0/5/130545194/6942538.pdf
    • http://armidalebushwalkers.org/uploads/1/3/0/6/130639379/8ca793443f641f.pdf
    • http://petalesdefleurs.com/uploads/1/3/0/5/130588499/79fec96b357da2.pdf
    • http://lincolnspencer.info/uploads/1/3/0/7/130775422/xomesevut_jubawuwej.pdf
    • http://natashafine.com/uploads/1/3/0/6/130621596/5775728.pdf
    • http://thedougsmithagency.com/uploads/1/3/0/5/130589128/3d186e105.pdf
    • http://deventermanueletherapie.nl/uploads/1/3/0/7/130776687/130776687.html#convert+html5+template+to+wordpress+theme

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001319.bin
413f27141463a36727b9b5cebf4445cae297a8d770e29d2a48af0fe855f0b1c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1319 7940 bytes

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