Malicious PDF — malware analysis report

Static analysis result for SHA-256 aed014d9fb750354…

MALICIOUS

PDF

53.9 KB Created: 2021-09-23 04:13:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 9287e69672c2ccbdad8ec0db78a819e8 SHA-1: 702b099c5f7122f4cf171fa55ab9a3ac393a348f SHA-256: aed014d9fb7503545d242e626c5456ecd331d513f498a8a53dc369e1d5761b2b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains numerous links to compromised websites, including WordPress upload storage, suggesting a link farm or phishing lure. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The PDF's structure and embedded links indicate an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7462

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://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140670147252---48218063361.pdf In PDF document text
    • http://studiotecnicopetrillo.eu/userfiles/files/15405591978.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1613ce75d7acbe---23579310415.pdfIn PDF document text
    • https://viettincapital.vn/upload/files/58443045329.pdfIn PDF document text
    • https://tunhuaduytan.com/upload/userfiles/files/lenonu.pdfIn PDF document text
    • https://nichecnk.leaddeehub.com/userfiles/files/jawisotalovamefe.pdfIn PDF document text
    • https://sindicav.com.br/ckeditor/ckfinder/userfiles/files/kitigiwepudefelo.pdfIn PDF document text
    • https://satesayap.com/contents/files/48088304032.pdfIn PDF document text
    • https://bursakaynak.net/userfiles/file/48659123968.pdfIn PDF document text
    • https://indicaperu.com/userfiles/file/vusifozebuv.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/97303244902.pdfIn PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f32a6275605411d894c620839c972ab8/91326372697.pdfIn PDF document text
    • http://dges.in/userfiles/file/taxugufumiperavakolif.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/e31f7741fba38554810bd48f6da264f4/38276226008.pdfIn PDF document text
    • http://avrig35.ro/uploads/fck_editor/file/zamin.pdfIn PDF document text
    • http://na3.it/misc/file/97116332403.pdfIn PDF document text
    • http://ty-int.com/files/files/vorejebimabenimobosof.pdfIn PDF document text
    • http://whatcanidoforyou.eu/publish/file/40082771488.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/9ec5ugpbdms4937c6chlh9l387/33369163244.pdfIn PDF document text
    • http://www.larucheapain.fr/ljk/file/tezawumugevovuf.pdfIn PDF document text
    • https://tradingcall.in/ckfinder/userfiles/files/vomopiv.pdfIn PDF document text
    • https://www.loscam.com/lib_common/ckeditor/ckfinder/userfiles/files/16191812258.pdfIn PDF document text
    • http://xn--80aafmoni2biho.xn--p1ai/admin/ckfinder/userfiles/files/91595013003.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=how+to+connect+with+usb+tetheringPDF link annotation

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