Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebe2bb6794801717…

MALICIOUS

PDF

75.2 KB Created: 2021-06-07 23:28:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: e80081b25a70be0d0f2cc727f9840e92 SHA-1: 8e717a6a348ac25eb08421d84fe1433a9453678d SHA-256: ebe2bb6794801717a4d756468e28620de0001d05c11a7847280498640f49b7d3
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites and other domains, likely intended to lure users into clicking and potentially downloading further malware or submitting sensitive information. The presence of 'utm_term' parameters in some URLs suggests a phishing or SEO manipulation tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

Heuristics 5

  • 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
  • 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://wastran.ru/uplcv?utm_term=pvz+heroes+unlimited+gems+2020 PDF link annotation
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/16098ed7b8bef8---65955064759.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16077aeb96d33d---senikuzunirivodixefux.pdfIn PDF document text
    • http://nacyc.jp/Upload/file/lodev.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/2a90ee755ec58b93bf9b1f142b69bf93/rokikamezamuduxobufidoruv.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160764bb51b6ab---73191505632.pdfIn PDF document text
    • https://butchercurnow.com/img/shop//contents/xopeleziwolepewasazidap.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b8da5a62a03---5361143702.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/jn5r2bcm5qummv539lh0p4jl85/13343096672.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/903ad09d598d024753853c5b81549cf4/57908213379.pdfIn PDF document text
    • https://ensasoft.com.tr/wp-content/plugins/super-forms/uploads/php/files/nqvbifvleiamo8ukkl45pf1r79/pezuz.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a149ebca422---pemirezajiragomu.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/e5dabf53dac77aa5e05e9934fc90b1e0/nomedewezorizefenamifewu.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/160b7b16967c35---wetutosaduxi.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098bcca67e42---61575260068.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/633v7c3rcbtcgt7bvbt1n4lol0/7079778759.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d99d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99D 5412 bytes
SHA-256: 5eb532e0032cff5c05ba713fad9ae29207859cf81fad9df27ceb1f378d434655
font_01_sfnt_off0000ebe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE5 2212 bytes
SHA-256: d8dc87f62386ad6ff58b19e3e23681cec1a297ba98e3c5ea67be0feb9b59df6d
font_02_sfnt_off0000f5ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5FF 10744 bytes
SHA-256: 5959da93b36fef5fd5e48b5adf8f13a941072137c483adcdcac4ea84347a28ed
font_03_sfnt_off00011b07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B07 16036 bytes
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550

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