Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b18a9b35b28752…

MALICIOUS

PDF

39.3 KB Authoring application: Serif PagePlus
MD5: ba757c0327277566ad2edeaa16710e51 SHA-1: 31743355135de01e884df134a034ef6128d88e17 SHA-256: 03b18a9b35b28752799984462ea89294206200efb06bdc5541208105339edd3b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded URLs pointing to external PDF documents hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic and ClamAV detection. While no scripts were extracted, the sheer volume of external links suggests a coordinated effort to direct users to potentially harmful resources.

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://tjentcorp.com/uploads/1/3/0/2/130289256/lomuzedagov-rusipijug.pdf
    • http://cpanel.13rays.org/uploads/1/3/0/3/130379078/zabufiko-vekixutidu.pdf
    • http://peobroke.com/uploads/1/3/0/2/130272925/3420418.pdf
    • http://matras.express/uploads/1/3/0/6/130604285/gufexop-kitefofenela.pdf
    • http://diasporamalivoice.com/uploads/1/3/0/4/130483118/9560314.pdf
    • http://www.annahinkkedcustoms.com/uploads/1/3/0/5/130546880/b7049306cb6a.pdf
    • http://makethelemonade.com/uploads/1/3/0/7/130775310/nogarosenenepi.pdf
    • http://experiencekailua.com/uploads/1/3/0/5/130546742/budeximuper.pdf
    • http://blackpearltattoosupply.com/uploads/1/3/0/6/130639513/nezofafimokowa.pdf
    • http://inpurpose.com.au/uploads/1/3/0/7/130775291/domumuzenup.pdf
    • http://socialronins.org/uploads/1/3/0/2/130291556/7284080.pdf
    • http://citizensreachout.org/uploads/1/3/0/7/130740342/2663776.pdf
    • http://grwim.com/uploads/1/3/0/2/130287895/xasugegifoge.pdf
    • http://wavesmediagroup.com/uploads/1/3/0/2/130289782/xalekaxipot.pdf
    • http://themoneygallery.com.au/uploads/1/3/0/7/130776687/sufefoxalag.pdf
    • http://www.northportcarpet.com/uploads/1/3/0/2/130270785/sepeturofixetomajiku.pdf
    • http://nimzocapital.com/uploads/1/3/0/6/130604685/5767532.pdf
    • http://woodlandstuition.com/uploads/1/3/0/7/130776148/130776148.html#age+of+empires+2+build+wonder

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003c77.bin
c8d8744c90f29d741a5542d96e0e5274175ddced50dc8b42962ad2ab16e2fe0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3C77 8256 bytes

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