Malicious PDF — malware analysis report

Static analysis result for SHA-256 0edc0430cc95e75c…

MALICIOUS

PDF

83.1 KB Created: 2021-09-04 01:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-16
MD5: 440b8b79c90795636f51515863359875 SHA-1: 652033f24c555c244892d929e4b6222be32e21ea SHA-256: 0edc0430cc95e75c771c8ac55b9237de49a033e3b3085f4d7aa7659d6bd7b355
156 Risk Score

Malware Insights

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

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting it functions as a link farm. This pattern is commonly used to redirect users to phishing sites or download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 https://oniceh.ru/uplcv?utm_term=tipos+de+violencia+juvenil+pdf PDF link annotation
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/161185cc8e7129---kukabowuvonaw.pdfIn PDF document text
    • http://beijingxinzhi.com/userfiles/file/20210706235252_762634375.pdfIn PDF document text
    • http://cloverpark1961.com/clients/6/6a/6a73a08bb68f643008adb5efbbb44e43/File/98534076634.pdfIn PDF document text
    • http://sushi-belovo.ru/files/sobosobakokagunosib.pdfIn PDF document text
    • http://agierresrl.it/userfiles/files/gozeve.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/9d3f4082b31d9736629c946021231dec/befibin.pdfIn PDF document text
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/s15q77mm6g5b58hprprtkmjeos/niwupinaligapop.pdfIn PDF document text
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160aa0c0e42108---rokagineraruwol.pdfIn PDF document text
    • http://sgadsahodayatarntaran.org/sahodyatarntarannew/userfiles/file/fuwexifojumotufibuwif.pdfIn PDF document text
    • http://sensor4you.com/fckeditor/editor/filemanager/connectors/php/fckeditor/upload/202108/file/nugejorebuvekerujavuluj.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608dbdf734feb---2550225199.pdfIn PDF document text
    • https://dijitalsanat.link/upload/files/fuzejabi.pdfIn PDF document text
    • http://dui-antidote.com/images/userfiles/file/50733272709.pdfIn PDF document text
    • http://shukokai-voves.fr/userfiles/file/36785008882.pdfIn PDF document text
    • http://ronaldtan.nl/images/photo/fejasavibawamowutedawonoz.pdfIn PDF document text
    • https://livre-art.com/ckfinder/userfiles/files/zozutibozevagogupejilu.pdfIn PDF document text
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/bcfc5229edad3a0ba89ee8ab9a8081ec/3852840025.pdfIn PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/s619hg9apnpsfsgb71gftvcdm4/gagologerukobaje.pdfIn PDF document text
    • http://abaj.cz/UserFiles/File/51880203557.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c0e6f486e6---12810077553.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/bilenixe.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021070202431937.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1610e8bfbd6d28---dotivudapuwekizadi.pdfIn PDF document text
    • http://www.ferm-matic.fr/upload/file/dofexu.pdfIn PDF document text
    • https://tessuno.com/upload/files/61219b4d2ead5.pdfIn PDF document text
    • 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_off0000dd4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4C 10672 bytes
SHA-256: ec4163eaf0b9c8df67f1c9bfb79d6cbf3e0095de7b56aa618da9cfed6dcb80f1
font_01_sfnt_off0000f5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D4 19132 bytes
SHA-256: b483f34a295b23ad2e5a4c1649b30992f8749955e2d859ff1614f1f509e62348
font_02_sfnt_off00012678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12678 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.