Malicious PDF — malware analysis report

Static analysis result for SHA-256 324abd41f343534a…

MALICIOUS

PDF

78.7 KB Created: 2021-08-17 10:32:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 28adcd2e80b33f3384f4843f1961400b SHA-1: 12cafdfdc9195b1259e0e9fb9b42cca61a1ea7fb SHA-256: 324abd41f343534a1dfc1df3f44f985e8238ee4808799cd89e56391c68a9f2ca
154 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. It contains numerous links, many pointing to compromised WordPress upload storage and other disposable hosting, suggesting a phishing or malware distribution scheme. The embedded links are designed to redirect users to potentially malicious websites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9086

Heuristics 5

  • 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
  • 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://coretry.ru/uplcv?utm_term=correct+postal+address+format+usa PDF link annotation
    • https://kuzeyilac.com/resimler/files/kutudebuvada.pdfIn PDF document text
    • http://hotelgiottotorino.com/userfiles/files/tisumewefenobonadu.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3fdcde461b---rujud.pdfIn PDF document text
    • https://warungmimpishio.com/contents//files/pefesurulesegezunalenesa.pdfIn PDF document text
    • http://nakatka.com/files/file/54767170285.pdfIn PDF document text
    • https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/9f7d1be6142fc3bfde81fe8b60060573/ponuxozezepepugujifuzex.pdfIn PDF document text
    • http://datcat.vn/2018/file/pojewakeguxitugezalagexu.pdfIn PDF document text
    • http://dsm-trhs68.com/clients/8/81/818e764d3414495a915a5f66638dc9bf/File/32063001570.pdfIn PDF document text
    • http://alarcon-v.com/editor_upload_image/file/39256825635.pdfIn PDF document text
    • https://barrierball.cl/ckfinder/userfiles/files/dotitopizi.pdfIn PDF document text
    • http://yucehukuk.com/resimler/files/94839835993.pdfIn PDF document text
    • http://ordineveterinarivenezia.eu/userfiles/files/17624889669.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f5c63658a0a---30002754136.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608d8c9eba15b---maxena.pdfIn PDF document text
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/f7ec3c83b7b709e9a3f95d48cbd84fa0/5891080374.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/jp77h02s79mn27lqg827hvd927/54844052711.pdfIn PDF document text
    • https://aurorabersinar2.com/contents//files/83264268999.pdfIn PDF document text
    • http://willettelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/28484589606.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160999115606c7---84427983439.pdfIn PDF document text
    • https://cakkue.com/contents//files/4026120946.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/r74119mhk5gear5d2oev4rcnn4/50938509503.pdfIn PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/hi89doo1d3osnb1qbjr7mssi44/36324103001.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e68b9f06637---banedidosuwuwiradatuxumab.pdfIn PDF document text
    • http://elm3rad.com/file/60603495168.pdfIn PDF document text
    • http://monktonlionsclubkidscamp.com/clients/9/99/99b8b5517e5fb663501b7ee5137ebf55/File/6585442120.pdfIn 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_off0000defd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFD 10716 bytes
SHA-256: e13cc0273ddc31ec4b9212cad701b0a598cf2fba93c7bd8acc210c5a4f039eb0
font_01_sfnt_off0000f7ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AE 17332 bytes
SHA-256: 59a03e96559d339d4fa058378ee5395c8360fbb232f66847b8ee864df4fb9174
font_02_sfnt_off000124de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124DE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1