Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e41e7170b1e73c…

MALICIOUS

PDF

91.6 KB Created: 2021-07-31 10:49:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 2b9e2bcdec85b406070eb8771cfb9a39 SHA-1: 5163ae0fe9cd7bb8523964f6f599d23c2bd960f1 SHA-256: 96e41e7170b1e73c747cc80f89218a0c7235994d1ee97e0209c934e1ec65df22
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are consistent with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 https://irlanc.ru/uplcv?utm_term=kaspersky+can%27t+connect+to+administration+server PDF link annotation
    • https://www.ppmcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/c6t7lj02hhc0cs93hlcsvu5n4l/xanarulanapejag.pdfIn PDF document text
    • http://vorne-sitzen.eu/pcms/content/file/10154707400.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/d9772838fd73da5ca9f200db71a027c3/99523374655.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/4a34b8b04286059c7a1fe69dd353af4c/lajizakodusukor.pdfIn PDF document text
    • http://apcmagon.com/userfiles/pogod.pdfIn PDF document text
    • http://artospace.com/pics/file/37759200027.pdfIn PDF document text
    • https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/d1a6445a6318ee87c1a0f0e68a4b6464/51788755884.pdfIn PDF document text
    • http://rszm88.com/upfolder/e/files/20210707085456.pdfIn PDF document text
    • http://hengtaixin.com/HangShun/ckfinder/userfiles/files/70408560388.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160720cab9c51f---76921047843.pdfIn PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160902e5b3d154---70769427900.pdfIn PDF document text
    • http://agro-vostok.ru/userfiles/file/tetoxatovudosotaxo.pdfIn PDF document text
    • http://pneusmarene.it/images/file/salanopiluw.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/16083399688441---rojiwugigorekuwusalo.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa46d877a9---gavemibarikug.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/e0pa21tugb84pm323i1qu7l6v7/bepinux.pdfIn PDF document text
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/76kmm1e2r61dh4gkva2e6ll98h/laledejod.pdfIn PDF document text
    • http://anatolianlgs.com/userfiles/file/janaxapitividaf.pdfIn PDF document text
    • https://chptravel.ir/data/file/3478661046.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/f9590c585c159634ede32febf783988a/26778062010.pdfIn PDF document text
    • https://aldwalia.com/userfiles/files/88519594133.pdfIn PDF document text
    • http://ritadas.in/userfiles/file/zovixedesagelopofulatokof.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_off0000ff5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF5D 10924 bytes
SHA-256: cfbec122a2fa68611339c14a00b0c83adbbc0c9de33ac3ca118a3b546363996d
font_01_sfnt_off000118cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000130de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130DE 17836 bytes
SHA-256: 0ae30fd83aa3679daa98a73e0c024eca1f7f982745c44e487fc726bb289b5981

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