Malicious PDF — malware analysis report

Static analysis result for SHA-256 815ebaf2510d7c1c…

MALICIOUS

PDF

43.3 KB Authoring application: pdf-parser First seen: 2020-09-07
MD5: 6b1a38b1f70663158f782654528a5b06 SHA-1: 69fcb9fbd37f20fe242f78c85d51e5b45b39334e SHA-256: 815ebaf2510d7c1ce019a59fd77cc7eec3a47668d072f095d6d1368e2dfb6fd3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs are likely intended to redirect the user to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://connecttbs.com/uploads/1/3/0/5/130539034/nejimurobef.pdf In PDF document text
    • http://mayragann.com/uploads/1/3/0/3/130313370/nogajepex_tusukukogaf.pdfIn PDF document text
    • https://davuwopemib.weebly.com/uploads/1/3/0/5/130550758/6d0205c.pdfIn PDF document text
    • http://wosimamep.tuyuy.icu/uploads/2020/01/27/mutipurit.pdfIn PDF document text
    • http://lakeshoreregionponyclub.com/uploads/1/3/0/4/130479570/3052320.pdfIn PDF document text
    • http://healthcaremanager.net/uploads/1/3/0/5/130539111/77879ee6a5ca4c8.pdfIn PDF document text
    • http://express36.ru/uploads/2020/01/27/jawojugoniratuxub.pdfIn PDF document text
    • http://girilya.com/uploads/1/3/0/6/130621076/jinerigenapis.pdfIn PDF document text
    • http://luxurytrashremoval.com/uploads/1/3/0/3/130312974/febogasibosewu.pdfIn PDF document text
    • http://fonariky.ru/uploads/2020/01/29/7451746.pdfIn PDF document text
    • http://lob.begettest15.fun/uploads/2020/01/28/e3b8802405.pdfIn PDF document text
    • http://vaseg.womanforyou.info/uploads/2020/01/28/zumik_zolijoguxi_tuzewusu.pdfIn PDF document text
    • http://eastcoastspeedwaytv.com/uploads/1/3/0/2/130289636/volunazuvi.pdfIn PDF document text
    • http://kerriturnerpianostudio.com/uploads/1/3/0/3/130324136/xagomuxojom.pdfIn PDF document text
    • https://jiwaruna.weebly.com/uploads/1/3/0/4/130488833/5209304.pdfIn PDF document text
    • http://vaxexu.in-op.fun/uploads/2020/01/28/6810761.pdfIn PDF document text
    • http://dapojos.1-gc.biz/uploads/2020/01/28/muzif.pdfIn PDF document text
    • http://mosbeton24.ru/uploads/2020/01/28/c481a1087c15cc9.pdfIn PDF document text
    • http://urfacefix.com/uploads/1/3/0/6/130621285/130621285.html#mecanismos+de+patogenicidad+bacterianaIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000154b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154B 9548 bytes
SHA-256: 441ee27bac65bb59b024ef5e2e388a83037b4c0f224dd1ee89f2c2c608e85bbf
font_01_sfnt_off00006c2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2C 3156 bytes
SHA-256: c048ac4ed90d63bfae46472f65f9cf6fc0bd5e75369f2d8f28771a6d96a2731c