Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e24ebc092becb0a…

MALICIOUS

PDF

80.8 KB Created: 2021-09-04 20:22:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 792a5e897cc4cb6c9c5b6a6af3e2981e SHA-1: 2a5d948f02d3f7465f3a77685fea4621ead3469a SHA-256: 4e24ebc092becb0ac4db682225f2234064a877049d305d395ca17bcfdacead69
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous embedded URLs pointing to compromised CMS uploads and disposable hosting. These links likely serve as a lure to redirect users to phishing sites or download further malware, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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 http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160ac6da30d066---marigudadupabamakozujinen.pdf In PDF document text
    • https://lecapsuledigian.it/file/32575425709.pdfIn PDF document text
    • http://iviltra.lt/images/files/redinu.pdfIn PDF document text
    • http://lionsmarsala.it/userfiles/files/29039306316.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/48dbcfe98d3321c28981c3f56310f6bd/xenewere.pdfIn PDF document text
    • http://xn--9n2bn9mz3aba29g44r4o0a.kr/fckeditor/userfiles/image/nimavapiwanin.pdfIn PDF document text
    • https://robotics-institute.com/wp-content/plugins/super-forms/uploads/php/files/sjiv56lac48autll8jpckhshfm/mudapovevutu.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/73840705852.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096e0aecb705---45013377113.pdfIn PDF document text
    • https://maconlux.ovh/userfiles/files/81425542730.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/161252e763498d---kawujotaraniwilupad.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/5d3778659f0b008f70828c06374609ee/60096437562.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/u5qe4evmds7gjvkhdgvdvle72t/34239706407.pdfIn PDF document text
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/556120ac1b1f9e1ee0376b3325853508/zomudewedu.pdfIn PDF document text
    • https://eyetracking.pl/userfiles/file/77201174004.pdfIn PDF document text
    • https://ceral.pl/ceral/pliki/file/92385294488.pdfIn PDF document text
    • https://10fci.org/userfiles/file/79814804783.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16078721ed1aa3---moroliwuwugebokivawifaruw.pdfIn PDF document text
    • http://e-hane.com/files/javivejulibokagazuwo.pdfIn PDF document text
    • http://portalinmobiliario24.com/uploades/fckeditorfile/ripidaridijiridewugavafo.pdfIn PDF document text
    • http://sgrdinstitutionspandher.org/sgrd/userfiles/file/2969019632.pdfIn PDF document text
    • https://ecole-anglais.com/upload/files/xikabapewejufifu.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160c995837dee9---88227408640.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=un+billete+de+ida+didier+van+cauwelaert+pdfPDF 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_off0000d5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D4 10724 bytes
SHA-256: 4811d46ff7c7502a1509da41393c1381727f1ceb4c83ff56ff6ccd83eee3dfa3
font_01_sfnt_off0000ee69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE69 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001067b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1067B 18464 bytes
SHA-256: 3aa9445ce686c8fb3529ecc5644cf918b1455657bab281466fd3078d8ed8d0f9

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