Malicious PDF — malware analysis report

Static analysis result for SHA-256 572d9813819c9555…

MALICIOUS

PDF

65.1 KB Created: 2021-10-02 13:36:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-03
MD5: 2a42a89baa1e88a2db8702894c862191 SHA-1: a6e6beb21c1b84a867691a2926429202ac5af336 SHA-256: 572d9813819c95554e4a8a064e3f9e479d18dd21e795870bd3be2ae5772410b2
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The critical ClamAV heuristic identified this PDF as 'Pdf.Phishing.Trojan-d2568dad23a94d95'. The PDF contains numerous embedded URLs pointing to various domains, and a specific heuristic flagged it as a link farm on disposable hosting. This suggests the document's primary purpose is to redirect users to malicious websites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4625

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://safrano.pl/userfiles/file/wekiguvojefonulamibeg.pdf In PDF document text
    • https://anfauglir.com/images/file/21026637666.pdfIn PDF document text
    • https://www.idd.no/ckfinder/userfiles/files/sineribar.pdfIn PDF document text
    • http://konstruktor33.ru/app/webroot/files/files/muzuk.pdfIn PDF document text
    • https://zenithservicos.com/userfiles/files/26066714666.pdfIn PDF document text
    • https://alhasooncorp.com/Files/files/tejamisapirumuko.pdfIn PDF document text
    • http://lamorenj.com/userfiles/files/91068680211.pdfIn PDF document text
    • http://autohondl.cz/userfiles/file/zobesugetunaladozoxowatiw.pdfIn PDF document text
    • https://wupaojichangjia.com/d/files/karubademanimalepulupuxan.pdfIn PDF document text
    • http://liceoadultos.juniorcollege.cl/userfiles/files/11739641776.pdfIn PDF document text
    • http://fvv-hohenfelde.de/sites/default/files/files/83736147369.pdfIn PDF document text
    • http://ingatlantv.tv/userfiles/files/68823405452.pdfIn PDF document text
    • http://platcometals.com/images/file/99738841294.pdfIn PDF document text
    • http://scpt.it/userfiles/files/15548759028.pdfIn PDF document text
    • http://alnoorcity.com/userfiles/file/82799920083.pdfIn PDF document text
    • http://bfcy88.com/uploads/files/25744974071.pdfIn PDF document text
    • http://disonde.com/filespath/files/20210914091503.pdfIn PDF document text
    • http://mofrantech.com/userfiles/file/mezedulipalide.pdfIn PDF document text
    • http://fourfoods.com/images/files/32928279439.pdfIn PDF document text
    • http://studio70.eu/userfiles/files/zozifajip.pdfIn PDF document text
    • http://ty6600.com/userfiles/file/37041878732.pdfIn PDF document text
    • http://kccmaul.com/files/files/vigusuzanuluxojewimojaw.pdfIn PDF document text
    • http://dsfly.com/uploads/files/1189512420.pdfIn PDF document text
    • http://sziazsauto.com/uploads/files/goriwitugepiborotekajofo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=fastest+grand+national+timePDF 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_off0000b298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB298 16360 bytes
SHA-256: 7583ac3d8b22f9f3f0c8087afb6a51acc8f0992c5f97f4e13cbcf944e0f87a26
font_01_sfnt_off0000dbf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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