Malicious PDF — malware analysis report

Static analysis result for SHA-256 133645445501f132…

MALICIOUS

PDF

48.7 KB Authoring application: Karbon
MD5: 553407ddbb628a1157b3a2738a5eb979 SHA-1: 9d7c911d5999ebd96076bd820821f9f4e04b1a2f SHA-256: 133645445501f132959d19e90997abf2b7128fcc2015edd57c6e227dde608915
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to numerous PDF files hosted on various domains, suggesting a link farm or content distribution network. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted from this sample, but the extensive link farm is the primary indicator of malicious activity.

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://propertasty.com/uploads/1/3/0/4/130436399/f8b88fd2.pdf
    • http://industrialpackagingjobs.com/uploads/1/3/0/6/130620736/besabidozodumati.pdf
    • http://jocelynivancicinsurance.com/uploads/1/3/0/5/130590278/ritovukebasaronogo.pdf
    • http://yoganookatfifth.net/uploads/1/3/0/5/130543057/jiminaw-netuzexetitutap-juxej.pdf
    • http://southernor.com/uploads/1/3/0/6/130639410/4486352.pdf
    • http://www.shortfillflavours.co.uk/uploads/1/3/0/2/130271165/69ec1fce6cdca2.pdf
    • http://visitnewberryfl.com/uploads/1/3/0/6/130639052/33587f902.pdf
    • http://cpanel.ceciliabramhall.com/uploads/1/3/0/7/130776122/lusozujaxesazatage.pdf
    • http://elinetlouicius.com/uploads/1/3/0/7/130775328/e2b13ad351.pdf
    • http://freespiritsewingstudio.com/uploads/1/3/0/5/130551364/rolijinisenawof.pdf
    • http://aviationcarbonevents.com/uploads/1/3/0/2/130288962/5fa2ea93e9.pdf
    • http://spencer4orem.com/uploads/1/3/0/4/130476944/3944426.pdf
    • http://nackip.com/uploads/1/3/0/2/130271051/4933173.pdf
    • http://cristopherblake.com/uploads/1/3/0/2/130289485/2c41472267a95e.pdf
    • http://painawaremagazine.com/uploads/1/3/0/4/130478438/gitugedozurilez_wusexakigelof_gebedimatuduxug.pdf
    • http://declutterdownsizeorganize.com/uploads/1/3/0/3/130323597/sexon_mibot_vokij_pujujigifuvori.pdf
    • http://wildflowerys.com/uploads/1/3/0/6/130620567/8fbf62c.pdf
    • http://clickpayuniversity.com/uploads/1/3/0/2/130270804/e7d355.pdf
    • http://jeremyjed.com/uploads/1/3/0/5/130589199/fasikevatezivomibi.pdf
    • http://down-the-block.com/uploads/1/3/0/6/130604556/866d9444cbd7abc.pdf
    • http://www.laurencooper-94.com/uploads/1/3/0/8/130813934/tafinuvuvavuka.pdf
    • http://moms-life.net/uploads/1/3/0/3/130379252/03e224143.pdf
    • http://currantit.com/uploads/1/3/0/3/130313316/lafevotiziwigezile.pdf
    • http://www.cousinsgarden.com/uploads/1/3/0/8/130874655/130874655.html#uv+vis+spectrophotometer+instrumentation

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059da.bin
d17b4f2cd34664742d11d448021eb5b67b13cf25522bdcb8e79087b1a24b58b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59DA 8716 bytes

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