Malicious PDF — malware analysis report

Static analysis result for SHA-256 a962a66d1c91c29a…

MALICIOUS

PDF

55.6 KB Authoring application: SWFTools
MD5: 381fa185872fdb63df1bab428abf060d SHA-1: 911f7b6cbf832c6a43cd746b2ff6e7c2f24041e2 SHA-256: a962a66d1c91c29acba874731d143808e351f31107b6c17a68e463601d8c1288
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs are likely part of this link farm, potentially serving as lures or redirects.

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://ninamarcela.com/uploads/1/3/0/6/130620919/fanenamisezin.pdf
    • http://sunshinecoastcounselling.com/uploads/1/3/0/3/130379362/f0d9cb6.pdf
    • http://scribejar.com/uploads/1/3/0/5/130543170/dujil-kizunagofitir-rusid.pdf
    • http://nolitab.indasoft.online/uploads/2020/01/29/bebiwimifob.pdf
    • http://trophypointcontracting.com/uploads/1/3/0/5/130589098/dolimufonosigok.pdf
    • http://lachlanswan.com/uploads/1/3/0/4/130479389/a198cc90a.pdf
    • http://spoletogreenfun.org/uploads/1/3/0/2/130288391/2903642.pdf
    • http://mycccamp.com/uploads/1/3/0/4/130476423/4050392.pdf
    • http://thelegendofauferre.com/uploads/1/3/0/3/130313746/5096669.pdf
    • http://cyclebavaria.com/uploads/1/3/0/4/130489131/130489131.html#ccna+3+chapter+1+exam+answers+2018

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000147a.bin
ab8854d42a315bab6dd61de8ddb301840e3b6d812992608a4b42e2e5cee757cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x147A 8680 bytes
font_01_sfnt_off00008b58.bin
b9869ae01bf51956a68e4ba44fbb76c0aa0770776e896724e84c2574993fa21f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B58 18612 bytes

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