Malicious PDF — malware analysis report

Static analysis result for SHA-256 c14e344611ca7304…

MALICIOUS

PDF

81.4 KB Created: 2021-09-07 15:24:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 54b9233a808981999f1478069f75b6f4 SHA-1: 5a6fce448c7ec747d42b9b1a0747d2ad8fae14a0 SHA-256: c14e344611ca7304da3df8b10f4b9c55a8c4eedd6b7e4a44e135f90e72235967
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites, which in turn host other PDF files. This indicates a link farm designed to obscure the ultimate destination and potentially evade detection. The primary purpose appears to be directing users to malicious content through a chain of redirects.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • 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://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b59c4cba0ae---sinimajagagaz.pdf In PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb4ceb2cefe---71314427078.pdfIn PDF document text
    • https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/lkcsihlv0ac5cvk6vcktf2gpv8/872367344.pdfIn PDF document text
    • https://mtmnetwork.net/uploadEditor/files/52530529679.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/i1d9cqvsnqggn6rrqm696pirgn/18366189941.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/roganofokeb.pdfIn PDF document text
    • http://seamcc.com/UserFiles/files/3920070009.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160742db8a93c3---daborunula.pdfIn PDF document text
    • http://eortak.com/img/fck_temp/file/12140042162.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a87eb406095---84075610064.pdfIn PDF document text
    • http://aapltd.net/userfiles/file/85973036861.pdfIn PDF document text
    • http://messtores.ca/fck_user_files/file/fuwizinopawobodixu.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/07b0f4b325a5c76a73ff301c679e4d0d/sumisibikinosumasedixubuv.pdfIn PDF document text
    • http://bacsionline.net/userfiles/file/17850486350.pdfIn PDF document text
    • http://orbitsecurity.qa/pro_mvp_tech/uploads/file/51873040058.pdfIn PDF document text
    • https://cmoretv.com/userfiles/jigadugebinobekovonozima.pdfIn PDF document text
    • http://gbfrjournal.org/pds/userfiles/files/7558551616.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/5ac27f19eba53d3391a03aaafd960187/81649488471.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a87f6385bd7---tugefosi.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/dofigorofeduvavofevowupit.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=las+48+leyes+del+poder+pdf+resumenPDF 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_off0000d6fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6FD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ef14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF14 10928 bytes
SHA-256: 939d3959d8e392e561ea2274121747fa75d32ae071f48e9c5fca43dc53df23ee
font_02_sfnt_off0001086e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1086E 18704 bytes
SHA-256: 3393c37e82cf42766b07702746b7acaec2f82304879da9c3d33d7eb53d7d0e98

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