Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d344f99afb4eee…

MALICIOUS

PDF

79.6 KB Created: 2021-08-29 10:25:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 4432794f13e6f434c41624f5213279c3 SHA-1: 852f6d42867a1ac9246bbe58743e28eb061c13e0 SHA-256: 30d344f99afb4eee4989bbbb01ecde84b7952906741c3ff73cfab71e1a501459
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple websites hosted on compromised CMS platforms, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the structure and URL patterns are consistent with malicious PDFs designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9844

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://webmenuplus.com/images/file/43527895501.pdf In PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/gjd5ni2s288a5c1gs50pvj50l2/81686070597.pdfIn PDF document text
    • https://piataafacerilor.ro/app/webroot/files/userfiles/files/97154736066.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/61af1d9c8cd03b7e497db87ef9497d0d/nixupuropusodijo.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609485d5a1dd7---30104076072.pdfIn PDF document text
    • https://latrinquette.com/upload/editor/file/46074875812.pdfIn PDF document text
    • http://stefani.cz/fck/file/90709451303.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/7b5f1c1dc32ad2d37ddd80f2b9d66aee/82946301862.pdfIn PDF document text
    • http://getem.pl/files/file/xigonaputumegifibufexagis.pdfIn PDF document text
    • https://mondialardesia.it/file/70272735234.pdfIn PDF document text
    • https://bselink.com/userfiles/file/visapis.pdfIn PDF document text
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c6f69044756---pelem.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d9d957b007---bifonixezibijeg.pdfIn PDF document text
    • https://viettrungson.com/media//Files/kobipezetiru.pdfIn PDF document text
    • https://baxsporthorses.nl/userfiles/file/48279034782.pdfIn PDF document text
    • https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/4c79096337c4ef1e3c529ead51f08725/zulezasupevifasetivurux.pdfIn PDF document text
    • https://wendi101.com/userfiles/file/dakulemupesebibewuwafusa.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/0782d1094456fc96e0609342e0cf945e/mefuduwofapelawumekewi.pdfIn PDF document text
    • http://khojedu.net/userfiles/file/60555600530.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a288689cbf8---toniwafi.pdfIn PDF document text
    • http://asupuro.com/user_data/image//file/bevilofejekadafijawesopir.pdfIn PDF document text
    • http://espacioschillout.es/images/admin/file/zifevelujisa.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6693b89e8---25170361909.pdfIn PDF document text
    • http://euredit-editions.com/userfiles/file/jijevikinu.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/klg2077om2ov1r9e0mo98gd21b/45965514072.pdfIn PDF document text
    • http://myphammonly.com/luutru/files/gomajozeje.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160730b674ea29---likitixipidebiwupok.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff4c0edd5b---42631074893.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=sycamore+canyon+trail+mapPDF 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_off0000d37e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD37E 17080 bytes
SHA-256: 0409323043af5418c7e70950d8c2a74fd80d8f12e9554262b76061b813fbac8c
font_01_sfnt_off0000ff21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF21 10556 bytes
SHA-256: e263d8a4ea7cd236d67f840aa2b7318308bd53c7c122b0805fbe55317ff783c7
font_02_sfnt_off00011735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11735 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1