Malicious PDF — malware analysis report

Static analysis result for SHA-256 59f5e4cc142f7c41…

MALICIOUS

PDF

85.9 KB Created: 2021-09-06 18:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: e5a1eeb345beebfda0eafb950fd826dc SHA-1: 6a1968268593c725d3d768941b591776f96479f5 SHA-256: 59f5e4cc142f7c4115a703125450ac3614d4af042731ff7c8691f96b48c309bd
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure suggests an attempt to lure users to external malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4862

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://espiber.cl/images/uploadedimages/file/givijabovuvibol.pdf In PDF document text
    • http://velapower.com/glwh/UploadFile/file/2021072605495673499.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b8c6c25453e---jirurulelefugugotebijopal.pdfIn PDF document text
    • http://desushibar.com/userfiles/file/falewomonovufufenodezu.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/c3a064d74b4387a677967877477ef5db/19816903483.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b6b7fc4abf---kopupinaxiser.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/4ek6tjpebtic9sh10b8goa9ed2/91341035307.pdfIn PDF document text
    • http://www.iciparis.ru/ckfinder/userfiles/files/gufawetegisewipidejegiku.pdfIn PDF document text
    • https://pima-alarms.rs/slicice/file/81288505041.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/9e411dd45d1e8f3641eb16b9509830e0/50283588899.pdfIn PDF document text
    • https://nucamsa.es/userfiles/files/jededi.pdfIn PDF document text
    • http://teplospectr.ru/images/files/34222616320.pdfIn PDF document text
    • http://baohanhranghm.com/upload/img/files/dedonuramesoninutele.pdfIn PDF document text
    • http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/21536575547.pdfIn PDF document text
    • http://changwontour.kr/FileData/ckfinder/files/20210608_792B66E55AAE86F4.pdfIn PDF document text
    • http://alternatifmedikal.com/img/userfiles/files/99241972933.pdfIn PDF document text
    • https://sharkovinkom.com/sharkovinkom.com/ckfinder/userfiles/files/vupixavofewidedapejufix.pdfIn PDF document text
    • http://olddieselparts.com/ckfinder/userfiles/files/79033354684.pdfIn PDF document text
    • http://bishnutoursandtravels.in/userfiles/file/80294391383.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f15523ea91---60350617892.pdfIn PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094df3aacd6e---vepiran.pdfIn PDF document text
    • http://studioagm.it/userfiles/files/35911996795.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=gastrostomia+pediatrica+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F6E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13785 10668 bytes
SHA-256: 0d6b03f5f65a8dcc4008a68e19220c6f7f2c6b87403632143f7c91948502eb88

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