Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d852c7ae8793b4b…

MALICIOUS

PDF

82.7 KB Created: 2021-11-03 02:37:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: c1ee275eeb327334bd5f7a8d230f8a6a SHA-1: a561a817195ce225906997f5af55dd52476c18db SHA-256: 5d852c7ae8793b4bb04a6d822a397bfa469f14c848998213d5d029cf9888cf29
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 http://mayingiabao.com/upload/files/25461755905.pdf In PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/161319650ed0b4---rakadafimedapagimo.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/474ece07e81f1d5d71fc76f0502cac3a/46122518179.pdfIn PDF document text
    • http://yuqiaohome.com/uploads/files/202109070315423584.pdfIn PDF document text
    • http://szkolaprzybranowo.pl/ckfinder/userfiles/files/fetetizurevimejobumedu.pdfIn PDF document text
    • http://greenlivinggarden.com/htdocs/UserFiles/file/90665146506.pdfIn PDF document text
    • http://ackerviewguesthouse.com/userfiles/file/99871828338.pdfIn PDF document text
    • http://rivucota.com/upload/files/54384042028.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/k8c3fasva4d70a23nhjf8a9svi/29590567094.pdfIn PDF document text
    • http://resortvillairene.it/userfiles/files/44695351684.pdfIn PDF document text
    • http://kangshi-you.com/uploads/files/202111030225347303.pdfIn PDF document text
    • http://ahjygjg.com/upload_fck/file/2021-9-14/20210914002807660053.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/jrqnfhcmt37ua258ob2oin6ua9/ganajufototove.pdfIn PDF document text
    • https://sunnyrosesschool.com/userfiles/file/64643280311.pdfIn PDF document text
    • http://lidaoxc.com/upload/files/6689833977.pdfIn PDF document text
    • https://sunrise-photon.com/upfiles/editor/files/tuzubolarilomaxatulufe.pdfIn PDF document text
    • http://nhuaduongnhapkhauaz.org/upload/files/loruxeleronowewozural.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/6768d81c4e38ddf9cfeb948fc80ebbc3/97930294794.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/1614e33ece10e9---dekasulugapar.pdfIn PDF document text
    • https://www.sensiblemachines.com/ckfinder/core/connector/php/files/14939469226.pdfIn PDF document text
    • https://dpengineers.info/admin/userfiles/file/wodomirukogepojevetize.pdfIn PDF document text
    • https://mitrasuksesku.com/userfiles/file/40055129161.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/82ae8f8c99d15732c59b5eeccf766e50/wakupiwu.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/2I9n2o-U8HI/uplcv?utm_term=full+moon+phase+todayPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f4ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4ED 10656 bytes
SHA-256: ab754ca76dd5a0f5b0adad6f5ead7cb8ebe9f2940209c2e438bf689563c2e2fa
font_02_sfnt_off00010d31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D31 18764 bytes
SHA-256: edc72f84d7f0ff50cb8aa812260e71698d6dcf945f5c1db393affcb5df8b93fd