Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed473296158a6988…

MALICIOUS

PDF

74.9 KB Created: 2021-09-30 10:07:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 0626727cdaa53a88d565e2195692b91f SHA-1: 6f32f1a6f8a3ada27c51ccf3dea43cc2157009d1 SHA-256: ed473296158a69884c3e290b9b9d2f7b8920291b899e48393fccad36ed528ad5
176 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, indicating an attempt to host malicious content. The 'SE_CALLBACK_LURE' heuristic confirms the document's intent to trick users into calling a phone number, a common tactic in tech-support scams and callback phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://kiajihlava.cz/UserFiles/File/82184472216.pdf In PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16138e4adc2b69---lejolo.pdfIn PDF document text
    • http://tnslib.net/userfiles/files/96000577452.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/vaxajanetoravir.pdfIn PDF document text
    • http://nomorecpapmachine.com/userfiles/files/wiselowubisudab.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161452d83a07ed---dovitalituwogegisugewuta.pdfIn PDF document text
    • https://ncltandatbar.com/home/ncltandat/public_html/dowalumniusa/ckfinder/userfiles/files/bufobiboxizuzaposagukogad.pdfIn PDF document text
    • http://malovanesklomh.cz/images/file/vipisesekadutuxod.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/d6eb89fc18cbefb24ea45a5ce80116fb/xopojabekuvul.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140d8f1164c2---35202956892.pdfIn PDF document text
    • http://irths.com/upload_files/files/90910203571.pdfIn PDF document text
    • http://kmjmt.com/news/upload/file/21092218593862619725k1jr.pdfIn PDF document text
    • https://galerie-louise.be/userfiles/files/zivasadosoxemidusiguvu.pdfIn PDF document text
    • https://big-affaires.com/img/pics/files/20350897827.pdfIn PDF document text
    • http://strahovka66.ru/userfiles/file/63567908539.pdfIn PDF document text
    • http://fkjz.cn/upload/files/2021/09/202109141626335793.pdfIn PDF document text
    • https://calson.garment-pro.com/ckfinder/userfiles/files/87810519617.pdfIn PDF document text
    • http://www.sudaff.com/pics/file/sikixalonuku.pdfIn PDF document text
    • http://beiks.info/public/file/8830168412.pdfIn PDF document text
    • https://abriganature.centralcms.cloud/galeria/files/guwixesekodageba.pdfIn PDF document text
    • https://intersat.lv/files/file/60784107910.pdfIn PDF document text
    • https://taborgospelassembly.com/userfiles/file/xunotebola.pdfIn PDF document text
    • http://bluecreator.biz/ckfinder/userfiles/files/2986309219.pdfIn PDF document text
    • http://innova-perila.ru/upload/files/88063744990.pdfIn PDF document text
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1612fa83b51b58---rupivozudapaxa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=manual+de+diagnostico+participativo+alfredo+astorga+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_off0000bc13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC13 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d42a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD42A 10952 bytes
SHA-256: 2eac0747a3923f8bcdb5113ed89ba4eeca53e78a897a2450fd3143e2f0f63410
font_02_sfnt_off0000ed7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7C 18356 bytes
SHA-256: e5b596e8b88ea0b05a5983469122be5a9159fb46545cd3a7246820d6c9d290ec

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