Malicious PDF — malware analysis report

Static analysis result for SHA-256 36b1b18b54a01981…

MALICIOUS

PDF

82.2 KB Created: 2021-07-09 20:50:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 794e451e3d9ef4b815687301e07d0110 SHA-1: eb8c6d6430075ae1bebabd2cd0063ec36170216e SHA-256: 36b1b18b54a0198124c011cb66e986c50821958ea0768bea529fdc0573710c58
156 Risk Score

Malware Insights

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

The file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple compromised websites and disposable hosting domains, which is a common tactic for phishing or malware distribution. The presence of numerous external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly support this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://polipadel.com/userfiles/file/lawakuxotinu.pdf In PDF document text
    • https://investmentskillsgroup.com/images/userfiles/file/30112408226.pdfIn PDF document text
    • http://technology-mp.it/userfiles/files/83804615871.pdfIn PDF document text
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/b0dff0ab5295e8bad5162e06275dd919/21071038929.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/tewevinofimidaga.pdfIn PDF document text
    • http://partnerplus30.ru/images/fornews/files/86008710456.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160c63d790efe1---66847308775.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c156a7383e1---revubelosufinariteso.pdfIn PDF document text
    • https://makeswebsites.com/clients/c/c8/c8c605999f3d8352d7bb792cf3fdb25b/File/digujibipugokizawa.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/5da8e15052b1fa4cadb6c38d08722456/5636020281.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160948566a4bd2---25403181255.pdfIn PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/35274379427.pdfIn PDF document text
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/9ed98c5388f3ecf053a9caa3348a6819/fonupifotiganodivonole.pdfIn PDF document text
    • http://cbestdesign.com/ckfinder/images_store/files/xipuwunixexaganupesab.pdfIn PDF document text
    • https://roweryelectra.eu/app/webroot/uploads/file/16202926465551.pdfIn PDF document text
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/07b8448ed86690d0d56b0e3ac0424d72/vivojag.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aeff06dcba5---24428363018.pdfIn PDF document text
    • http://narnivet.com/userfiles/files/zexasixagavarogezagotizoz.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095ecd6bcb95---76297561207.pdfIn PDF document text
    • http://szzxwx.com/Upload/Upload/file/202161924584850.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16092905cf2a55---nejunuraponutirapiwogod.pdfIn PDF document text
    • http://licausi.it/userfiles/files/togufu.pdfIn PDF document text
    • http://strandedtattoo.net/file/bekuxixuxuramexaxeguta.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=sum+of+roots+of+cubic+equationPDF 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_off0000d8e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E7 18548 bytes
SHA-256: f017ee5e9eb70ecff94e61a97ab9c8082059f75469484eb8cfaf9c1ecae7c59d
font_01_sfnt_off00010a5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A5C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12273 10912 bytes
SHA-256: 8aa15fae77f99a77f3972c79002a7a6cf34f5dd031fd9f4df2a72fff35d1caba

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