Malicious PDF — malware analysis report

Static analysis result for SHA-256 00572856702a125f…

MALICIOUS

PDF

70.3 KB Created: 2021-09-06 11:18:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: a7e2d9cba860c5bb0153eefbb738515c SHA-1: 911c427c456531cc772f5f2966a8277576018f34 SHA-256: 00572856702a125f5103b6cbc10f3b09ba92a63c9767354469e8ddefe7632ee1
154 Risk Score

Malware Insights

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

The PDF contains a link farm directing users to multiple external URLs, some hosted on compromised CMS upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the structure and URL analysis point to a malicious link distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7790

Heuristics 5

  • 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.
  • 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://manusingh.org/scgtest/eec-new/codelibrary/ckeditor/ckfinder/userfiles/files/64890610488.pdf In PDF document text
    • https://iaido-iaijutsu.ru/userfiles_exc/41044206260.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b997dc21237---2319737456.pdfIn PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/76020917221.pdfIn PDF document text
    • https://didacostruzioni.it/userfiles/file/85988536084.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/946f6f68c1396e2302dbc45b64ca1ce3/badapolinupadu.pdfIn PDF document text
    • http://www.blueoak.fr/image/file/sezijefezonulijolos.pdfIn PDF document text
    • http://patanamachine.com/imgUpload/files/58260938872.pdfIn PDF document text
    • http://ankurgroups.com/userfiles/file/39348589206.pdfIn PDF document text
    • http://teaandtiarasottawa.org/clients/e/e8/e8f54e69a7463df9fd0adff13cd8e90f/File/jokasaj.pdfIn PDF document text
    • http://apcmagon.com/userfiles/52115591939.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4f27ae045---kuxawoluzibavorulabito.pdfIn PDF document text
    • http://remproekt-m.ru/admin/ckfinder/userfiles/files/12411932026.pdfIn PDF document text
    • https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/a4bfb3839ddb11a29df22354e74608dc/79511461579.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/qji559tnblvmehg1f2fc652gep/51514943428.pdfIn PDF document text
    • https://mimpiindahsatu.com/contents/files/wosejulumamotetudu.pdfIn PDF document text
    • https://sieuthimaycafe.vn/uploads/file/nufonoje.pdfIn PDF document text
    • http://xn--90aoa5aj.xn--p1ai/ckfinder/userfiles/files/bugijafoleseg.pdfIn PDF document text
    • https://www.rekalibracija.com/wp-content/plugins/super-forms/uploads/php/files/da99054abfc3c9fa40c489172e073d39/92565612611.pdfIn PDF document text
    • http://bainihu.com/upfiles/editor/files/57364950031.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160798f02407b3---pofaxewosibisi.pdfIn PDF document text
    • http://vanxuantravel.com/upload/files/sobukivotubi.pdfIn PDF document text
    • http://joewhitefamilysite.com/clients/59967/File/25531896175.pdfIn PDF document text
    • http://riasztoszolnok.hu/admin/fck_upload/file/77247152443.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=hypnotic+words+and+phrases+pdfPDF link annotation
    • 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_off0000ef13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF13 19000 bytes
SHA-256: 1477c443ef301c3411ca5525f4f67d7bf4ecdeb3cf019f031c397bc5b231e6a3

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