Malicious PDF — malware analysis report

Static analysis result for SHA-256 b760e8c950c6566d…

MALICIOUS

PDF

42.2 KB Authoring application: Mobipocket Creator
MD5: cb87359428e822a2f975c2ac559ccb75 SHA-1: d468c1907da0ee6554dfba50dcfcacb0763099da SHA-256: b760e8c950c6566d0ae372ea73ff52bffe82b762621545b91f1103d4fc82de3a
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also flagged this file as malicious. The embedded URLs suggest a link farm or distribution mechanism for further malicious content. 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://blindsquirrelcreativedesign.com/uploads/1/3/0/3/130379266/dabilivala.pdf
    • http://nanni.info/uploads/1/3/0/3/130323222/c93a79036.pdf
    • http://narrins.com/uploads/1/3/0/4/130483302/3543142.pdf
    • http://luvegep.cafemostik.com/uploads/2020/01/28/0217639520.pdf
    • http://nowmetoo.com/uploads/1/3/0/6/130620947/befoxajoxix.pdf
    • http://kafasso.by/uploads/2020/01/29/5663499.pdf
    • http://pinizux.eltarrodeheno.com/uploads/2020/01/28/9005928.pdf
    • http://elevitae.com/uploads/1/3/0/6/130620198/genak.pdf
    • http://betterforlincoln.com/uploads/1/3/0/6/130621367/falopopub_zesobija_nofafikug.pdf
    • http://dynamicathleticcenter.com/uploads/1/3/0/2/130287238/3814780.pdf
    • http://naturesworks.net/uploads/1/3/0/2/130288720/pedavajikejiwi.pdf
    • http://boostersnetwork.com/uploads/1/3/0/5/130551607/e6bed07215f434.pdf
    • http://newstylemarket.com/uploads/1/3/0/7/130775169/130775169.html#how+to+convert+doc+to+pdf+using+itextsharp

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000139c.bin
7285991e984220a65638be0a691f886af0bea3ffece8b9acfb6cb11e34deaec0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x139C 9608 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.