Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d625d0c5d66fed…

MALICIOUS

PDF

78.1 KB Created: 2021-09-06 06:17:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 8c3cc4cd501eec52742c6cfc086977b5 SHA-1: 0eddf0fc0ad093202f2092d1c44d7f3b6b935ab1 SHA-256: 14d625d0c5d66feddd264e1679e38eda310f150f3ec1e0e379f38645c060c1ae
154 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous URLs pointing to compromised CMS uploads and disposable hosting, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, and the document body was unreadable, but the URL structure strongly suggests a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7397

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://csodamalom.hu/files/files/70950065993.pdf In PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610d4cd64a5bb---bumekawaduvig.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6dc7aca11023bbd7c1197445bdb07140/52295465184.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608dad045556b---70416936385.pdfIn PDF document text
    • https://varida-tech.com/ckfinder/userfiles/files/27157644596.pdfIn PDF document text
    • https://driftwoodcc.com/userfiles/files/bekedutatomonizenifo.pdfIn PDF document text
    • http://usateatop.com/_upload/files/58695175516.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/86d98d2eb29a6c661c28fc13c01cb62d/18835577716.pdfIn PDF document text
    • http://drapa-technika.cz/UserFiles/File/jukobulamuvave.pdfIn PDF document text
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608462b34cce7---25811160205.pdfIn PDF document text
    • http://chrisdepanneservices.com/Sites/cds/files/wuzom.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3459b42f72---bodofirisaz.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf54f6254f---wugexifanogarivobikixawep.pdfIn PDF document text
    • http://lenosada.sk/editor_uploads/files/97354103193.pdfIn PDF document text
    • http://galluccifaibano.com/userfiles/file/lowuzepalenawisol.pdfIn PDF document text
    • http://fundacjahfg.pl/upload/file/5161874249.pdfIn PDF document text
    • http://daehwa.info/uploaded/file/1090912364.pdfIn PDF document text
    • http://harposwebdesign.nl/app/webroot/files/userfiles/files/luwepovogo.pdfIn PDF document text
    • http://tai-group.com/upload/files/nubuwizomidofi.pdfIn PDF document text
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/42ed5d93677ba77ce977c40a160ae2b4/tetovamidit.pdfIn PDF document text
    • https://implant-drill.com/userfiles/file/36569698812.pdfIn PDF document text
    • http://dribblebar.pl/userfiles/file/66369627407.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=hashimoto+protocol+wentz+pdfPDF link annotation

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