Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f48f3ce5dd5ef64…

MALICIOUS

PDF

37.8 KB Authoring application: OpenOffice Draw
MD5: 12dcec19dd9101540f08ac9b34d006f3 SHA-1: 2af3aff7f49ceb28cfb2e173ceb4842b4a5d8e8e SHA-256: 9f48f3ce5dd5ef64147279975716017fc391973bc02b21392e2c6bf568cc8d95
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a phishing or redirection attempt. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious intent. The embedded URLs are likely used to distribute further malicious content or lead users to phishing sites.

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://speacetech.us/uploads/2020/01/28/7ec4ee4a0.pdf
    • http://jivopin.marveldc.ru/uploads/2020/01/28/978d2d.pdf
    • http://bartowwinds.org/uploads/1/3/0/6/130620163/pawifuxomegug_lexetaxubaro.pdf
    • http://synergymhs.com/uploads/1/3/0/4/130488304/193440.pdf
    • http://thelimitlessonline.com/uploads/1/3/0/7/130738889/pudoxode-dubuvad.pdf
    • http://countylinelogisticscenter.com/uploads/1/3/0/6/130621094/af5179a48a2.pdf
    • http://mitchell-winter.com/uploads/1/3/0/6/130639244/7303110.pdf
    • http://cecilyeiferle.com/uploads/1/3/0/2/130287894/130287894.html#guides+for+brides+checklist

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001154.bin
b1416fbfe0bf990c53703cfe80a643ba5f0f71fc89baff6a993d54917d865dbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1154 8532 bytes

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