Malicious PDF — malware analysis report

Static analysis result for SHA-256 93adebd90ccea94c…

MALICIOUS

PDF

82.8 KB Created: 2021-09-07 16:53:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a96a2a24640682dc46ec7eb69cd3f74a SHA-1: f076ff20144529869e1f153db36f45c3240236cf SHA-256: 93adebd90ccea94c8a5d79e04e1686dd1bd8014d87d080d5f7668a9de07900db
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution intent. It contains numerous embedded URLs that form a link farm, directing users to various external sites, some of which are hosted on compromised CMS platforms. The PDF structure and embedded links suggest it is designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://garglob.ru/uplcv?utm_term=water+pollution+project+in+bengali+pdf+download PDF link annotation
    • http://cambresisemploi.fr/ckfinder/userfiles/files/46989999095.pdfIn PDF document text
    • http://knuhpharm.kr/userfiles/file/20210616141248.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/9d01c3447eb714beb4b1b336a78005f2/81856146996.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16089c132eeff2---54643416118.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/1326928093c7cd114af161e803df9af2/69203438694.pdfIn PDF document text
    • http://xn--k1akb4c.xn--p1ai/userfiles/file/nadalavivisikupumivopivi.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/573a877fe459286a7f8ef99ad8aaea43/75721768229.pdfIn PDF document text
    • http://myboydfamily.com/clients/7/7f/7f513a2250c12de81a70a6735749c289/File/jevusukuvuj.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/16078a680316ce---mavobemuru.pdfIn PDF document text
    • https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/ee9038d822dbd38c135b07f72c2a64b0/87060970871.pdfIn PDF document text
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f078840e8c8---veterovasowerub.pdfIn PDF document text
    • http://1000projects.ru/upload_picture/file/nupitekuborijagedinabeb.pdfIn PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/06e09dc6ba506f17b9b19be6a3d63a5a/deguniral.pdfIn PDF document text
    • https://totalmediasolutions.ae/ckfinder/userfiles/files/31756631611.pdfIn PDF document text
    • http://gaziogluenerji.com/images_upload/files/22699291337.pdfIn PDF document text
    • https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/p31p8onoepo0euua6al5ihjmj9/joferimu.pdfIn PDF document text
    • http://coverybox.box8websites.com/ckfinder/userfiles/files/1224412683.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/9svefd46jmtr2hq691er95p3n2/liluzo.pdfIn PDF document text
    • http://teplospectr.ru/images/files/88215605959.pdfIn PDF document text
    • http://ankaser.com/userfiles/file/53109012267.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/77a82a8e77ecb3b8dc43745bf7049c7e/gufakemadi.pdfIn PDF document text
    • http://kpotplace.com/uploads/files/mokuvog.pdfIn PDF document text
    • https://btcauction.vn/hinhanh/file/vazajifi.pdfIn PDF document text
    • http://hk-sai.com/ckfinder/userfiles/files/xozasididol.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_off0000de7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7D 17604 bytes
SHA-256: a309794615c6140d6b63a128964f4cfa9aee9e80c971a44a04943a36bcf7d43e
font_01_sfnt_off00010c25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C25 11076 bytes
SHA-256: 9f14d8afaefcd1df77656e0085416f6b8d11b94c097fe48be535b838a6baed35
font_02_sfnt_off0001259e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1259E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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