Malicious PDF — malware analysis report

Static analysis result for SHA-256 bce60ad032079eab…

MALICIOUS

PDF

64.0 KB Created: 2021-09-17 07:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e805fd71b1d02cce775142591047f482 SHA-1: 98adbc309a08165468f8a4837d9ecfd66b6f6500 SHA-256: bce60ad032079eabf792fc66564f18269f4ee49ab0c99ae046cf2a6db89ccc48
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics as a link farm and a compromised CMS upload, indicating it's designed to host or link to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were extracted, the structure and URL patterns are consistent with phishing or malware distribution lures, often delivered via spearphishing attachments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9203

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 http://pc-driver.ru/userfiles/files/tarideminetusofo.pdf In PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1612fcf5a7c370---90090703276.pdfIn PDF document text
    • http://dichvutheapec.com/upload/FCK/file/50971476644.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/e790196fdbc63ac528beca94e7fcda3c/tarekujedesonades.pdfIn PDF document text
    • http://janaturismointegrato.com/uploads/file/mudefi.pdfIn PDF document text
    • http://mmsmarin.com/imgimage/file/46087412826.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/9o8f3jaouhpho9vf0t8hths7ip/6957763080.pdfIn PDF document text
    • http://kimandyoo.com/userfiles/file/52602984848.pdfIn PDF document text
    • http://pyramidplaster.com/file_media/file_image/file/17247788202.pdfIn PDF document text
    • http://erfaspot.com/resimler/files/vusob.pdfIn PDF document text
    • http://cerezolorente.com/files/cerezolorente/_repo/file/vaputuruwulujefaj.pdfIn PDF document text
    • http://vipforiraq.com/userfiles/files/xawupelaxigabisa.pdfIn PDF document text
    • http://teamwork-poetschke.com/ckfinder/userfiles/files/fonatatup.pdfIn PDF document text
    • http://paddockj.com/user_data/editor/ckfinder/core/connector/php/upload/files/39963255590.pdfIn PDF document text
    • https://netcsemege.elelmiszer-hazhozszallitas.hu/ckfinder/userfiles/files/jifurolinoti.pdfIn PDF document text
    • http://vietsonplastic.com/uploads/userfiles/file/talizogoralofaxidos.pdfIn PDF document text
    • http://baovecongtruong.com/upload/files/kezapo.pdfIn PDF document text
    • http://achwvs.love-mrt.com/upload/files/12461619896.pdfIn PDF document text
    • http://gurukripapublicschool.org/userfiles/file/tevobobemitijas.pdfIn PDF document text
    • http://eia-edu.com/userfiles/file/24632919882.pdfIn PDF document text
    • http://centralgiving.com/media/userfiles/file/85163432212.pdfIn PDF document text
    • https://jeevadhara.org/work/london/userfiles/file/27510263049.pdfIn PDF document text
    • https://v-rshine.com/upload/images/files/76875598126.pdfIn PDF document text
    • http://ksiclub.org/projects/achievemore/admin/upload/fckImages/file/46085768251.pdfIn PDF document text
    • https://institut-arabe.org/ckfinder/userfiles/files/dirujude.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=chrome+flags+in+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_off0000e6d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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