Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02680003a3128d5…

MALICIOUS

PDF

54.9 KB Created: 2021-09-03 19:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 46d65eac99a59f2474a5078995055a1b SHA-1: 1c0aff998d28b876dfcbf0e47a02e59a350123f0 SHA-256: d02680003a3128d557a936871753970762063348e100f2392b228df078984e96
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 phishing or trojan threat. It contains numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of external URI heuristics and the 'link farm' detection further support this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7768

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://irlanc.ru/uplcv?utm_term=identifying+independent+and+dependent+variables+worksheet+answers PDF link annotation
    • http://remont-etalon.ru/upload/files/66828699915.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/36a68b893fa4a80d305194422b67d2a4/jojexupa.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160cea257ee180---81573830624.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/50328394401.pdfIn PDF document text
    • https://fortworthdental.net/cmsCart/upload/file/wuruwu.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a99fb9c1be6---14540471946.pdfIn PDF document text
    • http://daugiavanthienphuoc.com/media/ftp/file/letawewikowufowabimato.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/5ac75d622fc7cd47a8d96dfa2c45a314/kiwim.pdfIn PDF document text
    • https://mystruggle.uk/indigo/ckfinder/userfiles/files/rixurekamejev.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/rf5q066spq3cj3k7cencp68ctd/fowit.pdfIn PDF document text
    • https://nestuby.com/userfiles/file/sojig.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160abe9c08d77f---55505066435.pdfIn PDF document text
    • http://abpaluso.com/upload/file/42792748923.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/160d9836f810dc---49345515032.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16071fb718b260---23381769559.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a4892a1b144---75163300463.pdfIn PDF document text
    • http://webbuilders.com/files/file/23885348882.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/a430975f8bf2af0204d1d4d4c6552f79/70057383402.pdfIn PDF document text
    • https://travellifeafrica.com/ci/userfiles/files/zagedaziw.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/rg7noq6ou8hccjm50mn67dkco7/wefujadewawak.pdfIn PDF document text
    • http://ibiforstarlight.ca/clients/3/3c/3cfcca4e360ca8807b7dd7d6e7cbeae0/File/80380658414.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086a108704a6---gisaniruxebuziwepezowok.pdfIn PDF document text
    • http://jeyadhurgatemple.com/userfiles/file/lubugu.pdfIn PDF document text
    • https://sapporomn.com/userfiles/files/77932455767.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_off0000c7da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7DA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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