Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1cd6e4538274e3a…

MALICIOUS

PDF

78.1 KB Created: 2021-09-09 17:42:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: d51c031e691eb2249be1f8e6d4e85b7f SHA-1: be2963e704b2522dd72b07c9a2ee8173b38380c7 SHA-256: e1cd6e4538274e3a25966a941a94b1c5137360a4e8462fdff5a5ff4f13923c43
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3586

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 http://elfuklid.cz/foto/Image/file/xufolepiruwagebub.pdf In PDF document text
    • http://www.bongbansaigon.com/uploads/files/fanopuvugukenaxiruk.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/apc6ecek5nagsf94psntoapp0p/tetajojixusawadikudide.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/m9o7b7t1iulf6k35ef9equ1q7l/44925005909.pdfIn PDF document text
    • https://derechosenred.org/aym_image/files/67196340606.pdfIn PDF document text
    • http://braghieriarchitettura.com/userfiles/files/37230518276.pdfIn PDF document text
    • http://finliz.lt/i/File/84191387408.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/16136ac2ef0393---44613864321.pdfIn PDF document text
    • http://belniig.by/public/file/91011351977.pdfIn PDF document text
    • http://problemconsulting.com/img/download/files/raxim.pdfIn PDF document text
    • https://farmaciasacoor.com/site/upload/file/87524401761.pdfIn PDF document text
    • http://prtourusa.com/FileData/ckfinder/files/20210903_FFE59D9EEF2C3534.pdfIn PDF document text
    • http://eastcity.hu/ufiles/file/83765942457.pdfIn PDF document text
    • http://bbfederico2.net/userfiles/file/xuzaregiwepazorefamuzik.pdfIn PDF document text
    • https://asztromiskolc.hu/ckfinder/userfiles/files/zopitekerisolufujo.pdfIn PDF document text
    • http://studiotecnicoarduini.eu/userfiles/files/wobaxojike.pdfIn PDF document text
    • https://www.vita-organic.eu/admin/ckfinder/userfiles/files/54106416321.pdfIn PDF document text
    • http://poetische-malerei.de/web/editor/files/dekiwunogabobemeza.pdfIn PDF document text
    • http://yjeverspeed.com/userfiles/file/25877439421.pdfIn PDF document text
    • http://www.saveurspoitoucharentes.com/admin/ckfinder/userfiles/files/50488351706.pdfIn PDF document text
    • http://sithome.com/upfiles/file/20210907145552.pdfIn PDF document text
    • https://latgalesamatnieki.lv/files/file/80213855133.pdfIn PDF document text
    • http://sabaispa.net/userfiles/file/2067620099.pdfIn PDF document text
    • http://homelife-superstars.com/image/files/85334109040.pdfIn PDF document text
    • http://www.halpellet.hu/userfiles/files/buwexo.pdfIn PDF document text
    • http://margheritango.it/userfiles/file/pogesawanafevuvawa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=can+i+see+the+wifi+password+on+my+phonePDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE238 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fa4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4F 10948 bytes
SHA-256: 126b83296c774517e7462b5e55f477b0c3954cdd82a694b4f3c98bd96e28846f

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