Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ace8e97d1e12668…

MALICIOUS

PDF

67.9 KB Created: 2021-06-02 23:58:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 94bf140573e74bcda416cf7778e2a9a3 SHA-1: 3576425e262d1d7828fb52d2e35f006591bdf77f SHA-256: 3ace8e97d1e12668c1183740dd009e913aac3245c4afcaf15d858dffef72566c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting it functions as a link farm to distribute malicious content. The presence of embedded URLs and the overall structure point towards an attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7771

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://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/decbc31b6dece551f90b965a43d1bcb8/1518884378.pdf In PDF document text
    • http://rotarylaspalmas.orgdocumentos/file/98885081832.pdfIn PDF document text
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/d35ui4qo6lqjtv2qlvtudll0v7/pomezuses.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/ac6e0d1a1395f155397ac2a95771da08/13033481876.pdfIn PDF document text
    • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/kp4ult2qf6u822jnaskhe2t9p9/vuxiwav.pdfIn PDF document text
    • https://atraba-holding.com/userfiles/file/xadexe.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/31aeb347966e70dd49beff9c9f354b60/satoxafiwukotadovimux.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/lezologiwaponiz.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/16ddbfca3211830f1d9f231be56a65a7/lodadezimufazufelepitete.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/luzegofovufideni.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/efd9ac93eb14b6fe299aaf49856f254c/2574635448.pdfIn PDF document text
    • http://mobilesamara.com/img/files/file/zibibumimiluz.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/tr7mq5m2i1d4geefopl3796lkq/sopux.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/17bf9d63cf6bababd094d215ac6aa97c/93849257824.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160821c81d4a18---zefavakav.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075e19bb8f1a---jenupagodabubikusaxovo.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/g5eo4jtqfh1nqogd0vtlk2qp71/10043915027.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=cartoon+baby+images+free+downloadPDF link annotation
    • http://scripts.sil.org/OFLIn 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_off0000d19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19C 5372 bytes
SHA-256: 148fc93a79f3daad362358a1c5e0f37d54c01200bef5da1b2344ca11e5fb9c46
font_01_sfnt_off0000e3e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E0 10048 bytes
SHA-256: e397e38e4bcaa8eb9c9205cb6ab3c8d755c35c412b0b5f0c3efdff5e9cdbde24

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