Malicious PDF — malware analysis report

Static analysis result for SHA-256 084ca6b364c6d95e…

MALICIOUS

PDF

93.5 KB Created: 2021-07-21 12:09:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 1c28cf0773548fb172e98f84f742d974 SHA-1: 9a1ade2d5f5d9dc5b659a487fcd6aa0939d55efd SHA-256: 084ca6b364c6d95e64c60a5ca496890e0795d055c283907d0d93cfbdbd93048c
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm to distribute further malicious content. The presence of a 'download button' heuristic reinforces the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca8017ddf3---68372990447.pdf In PDF document text
    • http://www.deopendeur.org/imgUser/file/metadorasosukavinonurilu.pdfIn PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/fa17b005d9b7f0eb502c86c7b0cc0aad/mepisalawatozozorake.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609ad196e9178---jadilikukar.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/3f5ced12b08c57817555e9a63a7e4f89/99500155568.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/liregefafitip.pdfIn PDF document text
    • https://hssipm.com/wp-content/plugins/super-forms/uploads/php/files/d5bc91f30220939906ef92c966430792/52819897837.pdfIn PDF document text
    • http://kargiskola.ge/myadmin/ckeditor/ckfinder/userfiles/files/52927743765.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/456b0527a0a0b198e2192f9fa3f0ef80/luropabajidajozu.pdfIn PDF document text
    • http://fra2ange.it/userfiles/files/xumuminirapolilolado.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077dda3c9308---vivevuziresewali.pdfIn PDF document text
    • https://webupdate.ca/wp-content/plugins/super-forms/uploads/php/files/bmou6s0ks235b5odoghbeidbtp/76175018436.pdfIn PDF document text
    • http://mrsgladysosei.com/clients/f/fd/fd76c46f75d01f7adbe86f52c2a5b8c1/File/rozotabobixofokuvojinu.pdfIn PDF document text
    • http://thedewakohchang.com/image/upload/File/7122071553.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/19124574540.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/6eae511d24550920a7b887fe7b38efdf/4974015118.pdfIn PDF document text
    • http://artecgroupservices.com/imagenes/file/46132461533.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/ivhjm3ue80rqmblcnj1mtltqcp/72657945726.pdfIn PDF document text
    • http://gwardiajuvenia.pl/zdjecia/fck/file/16062314271.pdfIn PDF document text
    • https://kamedia.vn/data/file/birujejamale.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160c64d511cde7---gejifame.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/qji559tnblvmehg1f2fc652gep/51514943428.pdfIn PDF document text
    • http://gpszone.hu/upload/userfiles/file/zizuboni.pdfIn PDF document text
    • http://easternhoteljeju.com/FileData/ckfinder/files/20210705_3F34BA43BFCE01E8.pdfIn PDF document text
    • http://amandamaitland.com/images/file/44644917848.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160820768c7e1d---92877002607.pdfIn PDF document text
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/23798e008e49274568fe25d1a49628c8/mijelolaxibalom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=tender+triumph+judith+mcnaught+pdf+free+downloadPDF 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_off00010638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10638 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011e4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E4F 11176 bytes
SHA-256: d309d8a3b4f11e2b55a93c9b9efcb11292283c9610df055ee74a81582b3bccea
font_02_sfnt_off00013808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13808 18108 bytes
SHA-256: 79df9f1115144abb88f86ebbdf28db1a751a758a0dfdab9c30153f7a474464a4

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