Malicious PDF — malware analysis report

Static analysis result for SHA-256 06ccda9605dbf9f3…

MALICIOUS

PDF

85.2 KB Created: 2021-08-24 17:46:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 595e919ea1a43890b5d36e0420e400c2 SHA-1: 3dd419652f0a7321b55f5cd9512ffca0cf664154 SHA-256: 06ccda9605dbf9f3625de49f53fe37f0841fc1115d1a285267807c77b02b320d
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains a large number of embedded URLs, many of which point to compromised WordPress upload directories. The ClamAV detection 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' strongly suggests a phishing or trojan distribution intent. The file's structure as a link farm on potentially disposable hosting further supports this malicious purpose.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3253

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://evohome.pl/userfiles/file/wejogamadasukebalijape.pdf In PDF document text
    • http://studioprogettoarchitettura.eu/userfiles/files/belevol.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/93210930208.pdfIn PDF document text
    • http://w.scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/50197603854.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/ofehccdhr7r4son0oc9ck1t3k8/1479752544.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160711810992f3---xaxavivutaw.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d32de43c3f---74275705042.pdfIn PDF document text
    • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/1eea1fe36e70e1e2f6234a587b1ab56b/92114899892.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd4765cf91---29393275499.pdfIn PDF document text
    • http://vienkiemis.lt/app/webroot/uploads/userfiles/files/berezose.pdfIn PDF document text
    • http://logtech.cz/foto/Image/file/14747522649.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608acc0ef2319---27486548395.pdfIn PDF document text
    • http://podlahyadvere.sk/editor_uploads/system/files/88481625972.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160e7cc2559457---57203616648.pdfIn PDF document text
    • http://dok-vo.ru/userfiles/file/mejujotufutukokisal.pdfIn PDF document text
    • http://starlightcelebre.com/clients/4/43/43e9139217482d7666ce300faf566241/File/bunizoroligadozebi.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d788b1a63bd---4759963156.pdfIn PDF document text
    • https://hongming-eco.com/userfiles/file/82619252623.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/i1t78ek6ttptobe78sf6varp2e/40619895563.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610ce3d8623a0---wefediwavugopajuzabi.pdfIn PDF document text
    • https://sensesgrouphk.com/louis/STARKGROUP/ckfinder/userfiles/files/kunasenazile.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/17909080614.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c4c13340206---18377609286.pdfIn PDF document text
    • http://enotecagaribaldi.it/userfiles/files/77328475040.pdfIn PDF document text
    • https://sjamsul-hidajat.id/ck_uploads/uploads/files/kamuwimenijisukamisumutu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=extremely+high+functioning+autismPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001017f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1017F 11084 bytes
SHA-256: 09b169655189b6ba148407c85d4358e33d634b9f651f0d7b51465933a825fd24
font_01_sfnt_off00011b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B35 17984 bytes
SHA-256: 9aa81e76dc0c8bdcdf0937134f2fc920fd3dfe7f641a6f81515e329394b37d35