Malicious PDF — malware analysis report

Static analysis result for SHA-256 341addee7df8b6bf…

MALICIOUS

PDF

54.5 KB Created: 2021-09-29 09:59:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 690d0a02bc2c162c153b6c6c3eed493d SHA-1: e0e53de287e72e3a9991e52d69a7a59fa8cd8432 SHA-256: 341addee7df8b6bf6f6f9d2efe22baf16942461b0eb65c45700796d70a4d8f29
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The primary attack pattern involves leveraging these links to lead users to malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6708

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://sharmtocairo.com/userfiles/files/kidoferejarunotafu.pdf In PDF document text
    • https://mimpiindah88.com/contents/files/96587778197.pdfIn PDF document text
    • https://mikludava.lt/images/files/89688623274.pdfIn PDF document text
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/a5f2bfcb9a585ea50c6e65549084bb77/97433638169.pdfIn PDF document text
    • http://35ju.21tg.cn/uploadfile/ckeditor/files/42571606078.pdfIn PDF document text
    • http://www.gonouvellezelande.com/files/jeguvezeginonota.pdfIn PDF document text
    • https://sportnazona.bg/f/uploads/files/32149293530.pdfIn PDF document text
    • http://intertexmedical.com/userfiles/files/2551748140.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142d665c0fb8---redaleduxikujaduvijira.pdfIn PDF document text
    • http://birzebbugastpetersfc.com/files/file/32697175991.pdfIn PDF document text
    • http://konberdbio.com/upload/files/nunufamitemupiwe.pdfIn PDF document text
    • http://tcyy88.com/userfiles/file/2021091023004773499.pdfIn PDF document text
    • http://6nergy.fr/6nergy/sites/default/user/file/zowamuseturixufazi.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/ql42h061lcq7oa7iukl8acu54m/74621755704.pdfIn PDF document text
    • https://1snrpaulista.com.br/ckfinder/userfiles/files/roxapebuwonobilevubu.pdfIn PDF document text
    • http://taiwanquinoafamily.com/shopadmin/upload/files/kebowupojitama.pdfIn PDF document text
    • http://nenkin-t.com/upload_img/ck/files/dulezatene.pdfIn PDF document text
    • http://www.juthamasclinic.com/upload/finder/files/75896048246.pdfIn PDF document text
    • http://sellmysayarah.com/userfiles/files/bozewoxozu.pdfIn PDF document text
    • https://yukkumpulgroup1.com/contents/files/rebibolika.pdfIn PDF document text
    • http://www.zywawiara.pl/pliki/wizowavolalosaniri.pdfIn PDF document text
    • https://www.kiemtoandongnghi.com/public/plugins/ckfinder/userfiles/files/tevolo.pdfIn PDF document text
    • http://auburn-companies.com/userfiles/files/92251804982.pdfIn PDF document text
    • https://praktijk.zorglink.nl/ckfinder/userfiles/files/nugivovulinobevaput.pdfIn PDF document text
    • http://the100voicesofgospel.de/fichiers/newsletter/file/23036730911.pdfIn PDF document text
    • http://petra-koparki.pl/Upload/file/18224069209.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=text+to+talk+androidPDF 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_off0000b876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB876 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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