Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da2e054648cdd8e…

MALICIOUS

PDF

70.3 KB Created: 2021-09-22 17:24:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: ec9698a20f68dc0206839a2ad57933f2 SHA-1: 0ace35154e252403ae9435f765bf5e92106c326a SHA-256: 6da2e054648cdd8ea0edeb74f92a8e0e77c097f304c8ba360981764c61431c49
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file flagged by multiple heuristics as malicious, including ML classification and ClamAV detection. It contains numerous embedded URLs that point to external, potentially malicious sites, and is described as a link farm on disposable hosting. The presence of PDF_URI and EMBEDDED_URL heuristics indicates the document's intent to redirect users to these external resources, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9156

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://pixomot.ru/uplcv?utm_term=screen+mirroring+iphone+to+android+tablet PDF link annotation
    • https://mundolibre.cl/uploads/userfiles/files/4621474663.pdfIn PDF document text
    • http://oletrans.sk/editor_uploads/files/18776467269.pdfIn PDF document text
    • http://4998horo.gmmwireless.com/contents/files/dovegilukarabinupi.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614263289d409---zefalosovuge.pdfIn PDF document text
    • http://les-dvorik.ru/userfiles/file/57706351226.pdfIn PDF document text
    • https://perfecthospital.net/FCKeditor/file/kizerepavarefovo.pdfIn PDF document text
    • http://gallery4walls.com/upload/editer/file/rogixalovelisogu.pdfIn PDF document text
    • http://iswii.net/ckfinder/userfiles/files/gubanimuj.pdfIn PDF document text
    • http://lorichphoto.com/pictures/file/wibipa.pdfIn PDF document text
    • http://studiobonvino.com/userfiles/files/92547287630.pdfIn PDF document text
    • http://plantessentialoil.com/upload/files/xapulojuwowule.pdfIn PDF document text
    • https://anjingliar2.com/contents/files/6095444127.pdfIn PDF document text
    • https://fong-cai.com/upload/files/xegapamo.pdfIn PDF document text
    • https://yingzhaoliuart.com/upload/file/wedabiviraxuzijaritak.pdfIn PDF document text
    • https://thai-airpark.com/ckfinder/userfiles/files/gidofila.pdfIn PDF document text
    • https://kientrucqhouse.com/uploads/image/files/90731827547.pdfIn PDF document text
    • http://www.yankey.com.tw/demo/public/editor/ckfinder/upload/user_upload/files/33517878565.pdfIn PDF document text
    • https://www.osteopathe-montpellier-sud.fr/ckfinder/userfiles/files/ripap.pdfIn PDF document text
    • https://www.opsclown.it/ckfinder/userfiles/files/zojipoxamugelat.pdfIn PDF document text
    • https://vientangluc.com/upload/files/jegazoximofidawupuva.pdfIn PDF document text
    • http://inciboya.com/resimler/site/files/dogizadexem.pdfIn PDF document text
    • http://bunny888.com/ckfinder/userfiles/files/jekoximapojapuxo.pdfIn PDF document text
    • http://104408017.linker.tw/files/25601194796.pdfIn PDF document text
    • http://thietbiantoanttk.com/uploads/files/sixikafivemilekavidab.pdfIn PDF document text
    • http://www.mediagrand.hu/data/editorfile/50337959155.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93E 17992 bytes
SHA-256: ec6ba7add944620f8c2a7813a3090ec9f4ae3252b13826189955bf0de4a8a41a