Malicious PDF — malware analysis report

Static analysis result for SHA-256 300cfe7d75d8e914…

MALICIOUS

PDF

83.9 KB Created: 2021-08-21 09:25:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 0264c11fdc504c964f79eec36de2ad94 SHA-1: d07c1396400dfbc0d50e95b26c989b0829810c2d SHA-256: 300cfe7d75d8e91400624ba801c0f672b52fe365fdbf5706d76071ed28d0d15c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, likely to distribute malware or conduct phishing. The presence of embedded URLs and the nature of the heuristics suggest an attempt to redirect users to malicious content, potentially via a PDF exploit or social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160d06b8fc6b0b---sosajejivuvuneposuzuj.pdf In PDF document text
    • http://lhs75aa.org/clients/0/08/08eb77d093c5251d787cf05842b4a73c/File/mopopijekofigira.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160bf4335abfe0---10724463338.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/gemezupinorusake.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607c265171022---difemanepud.pdfIn PDF document text
    • http://franciscakeryandcatering.com/clients/61981/File/bezidusojozilojukasomenof.pdfIn PDF document text
    • http://eastcity.hu/ufiles/file/73449547444.pdfIn PDF document text
    • http://farmaciacogliate.it/userfiles/files/fabifanudevanirabelixebo.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16107fc989852e---69023807391.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160e3d35599f67---ponen.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/4b425de5c6d7a61ed52d17b703afd2d2/39810062357.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080c85a9c6f8---35921031791.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/715b24298a2792f78540255ac7d5daa8/taxifekokefanaletepu.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/6ru31ee6slbv7cdoej8upv0gj1/fewidaraf.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca493121ac2---belegamelojitoke.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/radelomam.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/13099264183.pdfIn PDF document text
    • https://whiteplacard.com/UserFiles/file/siroz.pdfIn PDF document text
    • http://paitoonbox.com/userfiles/files/vusuxuput.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/fc0e45eac1700957acc5433dbe208e84/xevebubus.pdfIn PDF document text
    • https://musikkursus.dk/userfiles/file/83005737581.pdfIn PDF document text
    • http://meadclassof1991.com/clients/c/cc/cc689d7a74a098ef67b43942063c7ff9/File/42089750460.pdfIn PDF document text
    • http://nexxosrealty.com/userfiles/files/linezepopaxogevomovar.pdfIn PDF document text
    • http://irk-yoga.ru/upload/files/milene.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=paint+tool+sai+2+free+download+full+version+2020PDF 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_off0000e2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E7 10840 bytes
SHA-256: 35ac8fb01ebfb89e980f3ef5c085df43278968c1e9679ca85b73b954a4697bf0
font_01_sfnt_off0000fc2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2F 16828 bytes
SHA-256: 56dba3ee7455c0bc15f56cedd383a53f2361b0b7830a28c27a50b6bd6b11f5ad
font_02_sfnt_off00012818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12818 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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