Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3be3fd719eea8d0…

MALICIOUS

PDF

66.4 KB Created: 2021-05-24 09:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71b5d764d9ec6affe327533ad2478f4a SHA-1: 6638a18abf542b8a91c1cb5e1efff6c005572afa SHA-256: d3be3fd719eea8d02e53fb7c3c598144a5e2cf4f405821d1c29edeb8bbbb3976
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to compromised WordPress sites, suggesting it is part of a phishing campaign to trick users into downloading malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs are likely used to host or redirect to malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8377

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
  • 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.
  • 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://garglob.ru/uplcv?utm_term=vishnuvardhan+hits+kannada+mp3+songs+free+download
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160977395c44cd---39790822868.pdf
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608c984ed3d7f---desof.pdf
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/9106650b7a39f232949b9c1262c59927/50801759499.pdf
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/e2ba32525655399fa153065b9f83a665/73149293541.pdf
    • https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/b00edb7f502bdffd05e305a0df17ee25/lipomoganumidadovepepi.pdf
    • http://unseenadventure.com/userfiles/file/bojewowaradoxog.pdf
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160aad089bfa28---12809416307.pdf
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/8d2d1e23e273ba96e11263f3f6b4b5bd/45775042966.pdf
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160966dacd713b---7520794786.pdf
    • http://amandatravel.com/userfiles/file/14758244794.pdf
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607578a4bec1e---fatadumevujofisoxafabo.pdf
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1607b7f3749579---lukeniwapikoto.pdf
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/iinh08csflia7merud2ac52jmf/96934548783.pdf
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/e860aa17484c5faa9b9a4f0fb1638a58/nuzalekagotowuzekowate.pdf
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3a85b0321---53135504150.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db31.bin
fe73d5e96fbb4918b14c4773042f8194fda459186bccdae78c05c5144d3aff55		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB31 5680 bytes

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