Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e82f4054680d16…

MALICIOUS

PDF

67.9 KB Created: 2021-08-08 00:18:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: dd4c926118fa7f831ed533f502ae30a5 SHA-1: 2bf8e542946e330d294a2eb520df22ba772ee359 SHA-256: e2e82f4054680d16f0308536a1ef7a0d3f15da93daa5978133e4ca9c84c554f8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm to distribute malicious content or phish users. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9073

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 https://oniceh.ru/uplcv?utm_term=condensation+evaporation+melting+freezing+worksheets PDF link annotation
    • http://nb-magnet.com/upload/files/26316788050.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fbbe24579b9---samoreneraroluzisapi.pdfIn PDF document text
    • http://cuanhuadanang.vn/uploads/image/files/68065498353.pdfIn PDF document text
    • http://dbexpertise.fr/catalogue_dynamique/file/7353685045.pdfIn PDF document text
    • http://darstin.com/userfiles/files/lipifele.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/7af72fbab21c00e70c42a43f85fc640e/3372477476.pdfIn PDF document text
    • http://casaatlantida.com/userfiles/file///52078099196.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7eaaaf2c8---dudidosukujinowaja.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/ac95ca9c2ecfd21664495033ac6b0e0e/dinemigofopuwazalenime.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/34975402542.pdfIn PDF document text
    • http://centrumbiznesurawicz.pl/userfiles/file/75486279847.pdfIn PDF document text
    • http://nena-artspace.com/ckfinder/userfiles/files/burepaloduz.pdfIn PDF document text
    • http://glamour-nsk.ru/ckfinder/userfiles/files/nowifuvaboviwiz.pdfIn PDF document text
    • https://tecnibat.net/uploads/archivos/rerexuzi.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/22b27623da2940bf20a2c77d245e43c9/29038999980.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca8fa5732a---74999843506.pdfIn PDF document text
    • https://jxloanchien.com/style/postimage/file/nuwuvoluvazugovidemefowus.pdfIn PDF document text
    • http://phamtrangia.com/upload/files/pezujeropomusiwitipalixu.pdfIn PDF document text
    • https://gangwontaxi.com/FileData/ckfinder/files/20210709_52330FC4C5E8FFD8.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa9650865c3---wafezavototo.pdfIn PDF document text
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/b631125450cb8ffc23d4ae98e0f6f29a/20057075653.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160955fbbf20e5---60841376172.pdfIn PDF document text
    • https://livre-art.com/ckfinder/userfiles/files/45013426751.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_off0000d987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD987 17660 bytes
SHA-256: 7ce9ef77745f27e5fcae7c7949d20de123dba9e6b0df28a2f330eff6c9f9895d

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