Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc30a5938aba5ed1…

MALICIOUS

PDF

64.0 KB Created: 2021-09-11 08:18:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: c6311a511d69b4690961a45352e6cd32 SHA-1: f4c7085091ccb84163e79ccacaa987bd9c0552ab SHA-256: bc30a5938aba5ed174012baf7820aa2d69830005dd1d99368b9cdd62de41ec2d
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and a large number of URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. The embedded JavaScript is likely used to facilitate the redirection or obfuscate the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7025

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://littlepearlbooks.in/data/eimages/file/kuxezunidanevidate.pdf In PDF document text
    • http://hylimusic.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/50217998805.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613bd420bceac---20741080909.pdfIn PDF document text
    • http://buyyoutubelikes.com/ci/userfiles/files/dibezuzisowosedekutedin.pdfIn PDF document text
    • http://ibsdhc.hpds.work/ecdemo/web/js/ckfinder/files/files/waloxizagumisekadaje.pdfIn PDF document text
    • http://duonglaohanoi.com/userfiles/file/2280611861.pdfIn PDF document text
    • http://shahgrp.com/uploads/73509448456.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/cr8pfqurk5qirc9fli4256vmg1/66031921501.pdfIn PDF document text
    • http://esistore.de/userfiles/file/sofugejazavugilakuxobovaj.pdfIn PDF document text
    • https://ruxthai.com/ckfinder/userfiles/files/ganotetopivuxenisivek.pdfIn PDF document text
    • http://jiuxingchaoshi.com/uploads/file/091436089019.pdfIn PDF document text
    • http://childprotectionindia.com/lexcyberia/userfiles/files/fagonadasidigotisaz.pdfIn PDF document text
    • http://fc-junajted.com/upload/datoteke/sagidegibaratiz.pdfIn PDF document text
    • https://e-ssuances.com/ckfinder/userfiles/files/63620725632.pdfIn PDF document text
    • http://gameadvisers.com/js/new/fckeditor/userfiles/file/jemozenaxovovopa.pdfIn PDF document text
    • http://ncteonline.com/userfiles/file/wemenokojuninaj.pdfIn PDF document text
    • http://fleshlight-tw.com/userfiles/file/4479827778.pdfIn PDF document text
    • http://bjhtdszdh.com/v15/Upload/file/202196858388865.pdfIn PDF document text
    • http://bagodilovaspark.hu/userfiles/file/47161869664.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/sn30g113irse40448be1ronep9/jomevate.pdfIn PDF document text
    • http://medicaldistri.com/ckfinder_files/files/51983701100.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/361ad08bcc9450e82658ceeca1dea622/99672874346.pdfIn PDF document text
    • http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/94120995135.pdfIn PDF document text
    • https://oncallanatomist.org/ckfinder/userfiles/files/37205282871.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=dual+space+free+fire+apkPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD52 16064 bytes
SHA-256: 9e6f8fda728ee47451fec6ece7fde7a9addf2c6744962c3353816ac2795cecef

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