Malicious PDF — malware analysis report

Static analysis result for SHA-256 f60a8f7eef065002…

MALICIOUS

PDF

80.7 KB Created: 2021-06-22 16:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: ffd7c83dcf73ded9a2ce130d6fab39ee SHA-1: 22f071107b3d6ec57d452a88fbcf270d51ca09bb SHA-256: f60a8f7eef06500259bff05cf3375d8d80fa1b323f2c26b82081027d7d12a67c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous URLs pointing to compromised CMS upload directories and disposable hosting, suggesting a link farm designed to redirect users to malicious content. Although no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to exploit vulnerabilities or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/1bd92e8543c24a4d6a77a439a2897904/pugigexipubi.pdf In PDF document text
    • http://kimbuunguyen.com/uploads/userfiles/file/solimojivuvozoninozopiwo.pdfIn PDF document text
    • https://hogies.com/includes/template/uploads/file/sufiko.pdfIn PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/a9140000d1f2f96b0b1620aa68fa4bfb/gejavakopisiwa.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160986269b31ce---bexunorodiseliz.pdfIn PDF document text
    • http://bocghebinhduong.com/media/ftp/file/jutunowebovig.pdfIn PDF document text
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607c14361805e---fozamubuxiw.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609a091416b5d---livajabufanuxoj.pdfIn PDF document text
    • http://goref.ru/files/file/6373830501.pdfIn PDF document text
    • https://divinenine.net/userfiles/file/82980932073.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092de96a210e---felabalod.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16093b62c99abd---salubad.pdfIn PDF document text
    • http://www.tomasjelinek.com/img/pub/file/64489622086.pdfIn PDF document text
    • https://geneolock.com/locktactyuma/userfiles/file/49961734982.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae0a8847b14---povavigaxezenudes.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/2850ecae0853e8fe347c0b8cc9c1df68/digazotakonek.pdfIn PDF document text
    • https://wavesmaroochydore.com/wp-content/plugins/super-forms/uploads/php/files/cin9186inoiugvknfqt42rq8f9/nurabavazetibem.pdfIn PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/eup58duc2re9vq00td6u4t7c75/rimuruwi.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/7c4e850fa1011b5e247c51f78f5f4ec0/95723018296.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=division+of+labor+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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E6 5232 bytes
SHA-256: ea03ff2ef56337de0395c11250554e1a925f0c387b262b74c990aa49de9d7541
font_01_sfnt_off00010aca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACA 12164 bytes
SHA-256: dfe6709417e1908f87c56dd3d572bcfbdf8376948354dcaef5b8b63f1564cd19

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