Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd78f5ae82e16cd9…

MALICIOUS

PDF

52.5 KB Created: 2021-07-20 15:48:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 1c3cf70d3fbbea73daa900e9e89a334e SHA-1: 91614a37cb34c45e2ead0bb9ef30af05090e448f SHA-256: dd78f5ae82e16cd95c0fda7fbed57384882eac4a6bbadf8d7675a3ec258169aa
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a link farm pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely serving as a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6164

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/76a1d8a6f2e18ac5f90e615108a4384c/36222588426.pdf In PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aca7fa521ac---gokirokire.pdfIn PDF document text
    • http://magendans.com/imagefiles/file/wexewesemenaxerupofegoxez.pdfIn PDF document text
    • https://tucarrorentacar.co/ckfinder/userfiles/files/tewefasamovix.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/16075ea4b63809---wezevupuk.pdfIn PDF document text
    • http://immobiliareborghi.com/userfiles/files/39330053289.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160ad3e98079a8---75796622975.pdfIn PDF document text
    • http://valsadindustries.com/userfiles/file/38642844151.pdfIn PDF document text
    • http://omonetach.pl/foto/ilustracje/file/17107861690.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/xoxowazadaxatejerijaje.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/fba7qvg8e5ei0ionbot8iou4nd/kumekoxoxudewozigo.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/e9ed2e832d79065ebd343a5839a5cb54/23937677029.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b84fd6c4a8---gigomeregitadas.pdfIn PDF document text
    • http://vinabomi.com/uploads/userfiles/file/31735384728.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074629b5a805---xadoralomele.pdfIn PDF document text
    • http://shadesvalleymounties1969.com/clients/868959/File/xifemosafifololezoliwito.pdfIn PDF document text
    • https://bangprice.com/bangprice.com/beta/cms_image/file/2159563401.pdfIn PDF document text
    • http://taketty.xyz/js/ckfinder/userfiles/files/12974147870.pdfIn PDF document text
    • http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/4b22d5f9f730ca4f999a98511d86f83e/jumotazezodor.pdfIn PDF document text
    • http://ngnjl.com/userfiles/files/98020897366.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e33a2042d9---wepujovugerogosa.pdfIn PDF document text
    • http://wchs65.org/clients/b/bb/bb65574a37642f7fe3135935df861e67/File/50049038396.pdfIn PDF document text
    • https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/f6c3d2f79284d77689d50bb1d88eef87/rinodituvirusibobixakozu.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd98479ae0---nobewepik.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=tell+me+about+yourself+replyPDF link annotation

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