Malicious PDF — malware analysis report

Static analysis result for SHA-256 bafe8a17401d0de9…

MALICIOUS

PDF

40.2 KB Authoring application: Nitro PDF
MD5: 17ac171dd14eff13430fe2e082b55333 SHA-1: 300fc66d117739708a431ef48e3e99ce61b18c48 SHA-256: bafe8a17401d0de95b0b988b0ef347393587f5a057d8bb4f0dd174c9217d281c
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The embedded URLs point to various PDF files hosted on different domains, suggesting a link farm or a phishing campaign. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports the phishing and malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://perumarket.net/uploads/1/3/0/3/130323957/dakufutupapuga_paworexizuxav.pdf
    • http://tamaraberkeley.com/uploads/1/3/0/4/130483591/563345.pdf
    • http://laceyandleatherexoticattirellc.com/uploads/1/3/0/4/130488700/8933730.pdf
    • http://tiffinindia.ca/uploads/1/3/0/6/130604086/7527775.pdf
    • https://ramuvuloz.weebly.com/uploads/1/3/0/5/130589088/3266595.pdf
    • http://bazibobuw.pibhortolandia.org/uploads/2020/01/28/fepogegafilaviferip.pdf
    • http://zirigabe.activityedge.com/uploads/2020/01/28/dodulifuxofitofo.pdf
    • http://116pinehill.com/uploads/1/3/0/3/130313634/f18bd72.pdf
    • http://skyadventuresnw.us/uploads/1/3/0/5/130590717/22c432.pdf
    • http://socialleadershipsolutions.com/uploads/1/3/0/6/130621592/faganegolu-zeragewof-negovotapipel.pdf
    • http://woodlandstuition.com/uploads/1/3/0/2/130289799/130289799.html#answer+the+question+you+jerk

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012ea.bin
a50cc370b36680d6b928bd0aa5653ab394f25e4461b7ece04b8e4091a7272502		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EA 8556 bytes

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