Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c2312f3fbedb070…

MALICIOUS

PDF

40.0 KB Authoring application: Scribus
MD5: 21fc4c35f6502e5c4cd3aacd98d67f86 SHA-1: 4fcf63996ad92d1b42fbd9d0aad008154ef77177 SHA-256: 6c2312f3fbedb070ef9c917d86c47882384b80beed42b9a42ce39453a8de30b9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of embedded URLs pointing to other PDF documents hosted on various domains. This behavior is indicative of a link farm or a mechanism to distribute malicious content or phishing lures. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of compromise.

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://buzzboxguitars.com/uploads/1/3/0/7/130738970/romuzeroziviko.pdf
    • http://movalhome.net/uploads/1/3/0/6/130621832/duputalejijo_giranolom_vamujafapawazit.pdf
    • http://blackmomsstaylifted.com/uploads/1/3/0/6/130604322/wibadovoxigak.pdf
    • http://laurawanamakerdoulas.com/uploads/1/3/0/5/130551087/2852349.pdf
    • http://agenkastam.com/uploads/1/3/0/2/130270831/xusenirokiketo.pdf
    • http://bch-marketing.com/uploads/1/3/0/2/130272804/3532e63ad.pdf
    • http://joni.girls23.pro/uploads/2020/01/28/vomiwop_nakizoduzakix.pdf
    • http://apoaaxi.org/uploads/1/3/0/6/130620971/ff7fab95.pdf
    • http://myangelabartlett.com/uploads/1/3/0/2/130289259/7080115.pdf
    • http://standoutindallas.com/uploads/1/3/0/6/130604456/8153039.pdf
    • http://davidmarquesibanez.com/uploads/1/3/0/2/130272892/130272892.html#blank+bar+graph+worksheet+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013b0.bin
313ba87c03bfa0e0559609f4ae8018c1afb0b4cae998820ef3756bcd060dbf9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B0 7672 bytes

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