Malicious PDF — malware analysis report

Static analysis result for SHA-256 56fa03354c14ba82…

MALICIOUS

PDF

69.3 KB Created: 2021-09-09 19:06:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 0fafeb3fe10d719f7229e207c26f67e8 SHA-1: f4e1f36cb61c2ac6ed8699a436dd2912ad1b9f57 SHA-256: 56fa03354c14ba8211b59193bd294f8e0d44186fbf71cc3064e2105bc2f20bf2
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this. While no scripts were explicitly extracted, the nature of the embedded links suggests an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4606

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 http://justsayhi365.com/uploads/file/3885808069.pdf In PDF document text
    • https://sudhirsachdevaclasses.com/ci/userfiles/files/78143932486.pdfIn PDF document text
    • https://vnnc.vn/img-hdmedia/files/fanebikomeluxowovepel.pdfIn PDF document text
    • http://opusbiz.kr/data/editor/file/7691405076131aa98cda19.pdfIn PDF document text
    • http://tdbakademi.org/userfiles/files/68983055674.pdfIn PDF document text
    • http://rucodelniza.ru/userfiles/file/94301468029.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/fasomipebokelikolewadik.pdfIn PDF document text
    • https://www.natursany.com/ckfinder/userfiles/files/26379178620.pdfIn PDF document text
    • https://guapa2.com/admin/fck/file/zuweroxusires.pdfIn PDF document text
    • https://dienmayminhchau.vn/uploads/news_file/vorakuz.pdfIn PDF document text
    • http://firewaterdamagedfw.com/test/fckeditor/uploadfiles/file/30724494462.pdfIn PDF document text
    • http://agilesolutions.in/uploads/34109786840.pdfIn PDF document text
    • https://hometeamcorp.com/images/usr/65494477490.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16134f82c2d9b4---55077531112.pdfIn PDF document text
    • https://demircanticaret.com/userfiles/file/galepikobofef.pdfIn PDF document text
    • http://quiltingacademy.net/fckeditor/userfiles/file/melekukakawiwomefuve.pdfIn PDF document text
    • https://bselink.com/userfiles/file/tedumazawugusuvifes.pdfIn PDF document text
    • http://jmestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/60383989670.pdfIn PDF document text
    • http://thietbibepnhahang.net/media/files/juxatox.pdfIn PDF document text
    • http://iowatriallawyer.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/36311260748.pdfIn PDF document text
    • https://sitycare.com/FCK-UserFiles/files/xopudoz.pdfIn PDF document text
    • http://opuspointpartners.com/ckfinder/userfiles/files/zowunevesokejagibotimoli.pdfIn PDF document text
    • https://jatransfer.com/userfiles/file/50892021183.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=thop+live+cricket+matchPDF 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_off0000e00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00E 10488 bytes
SHA-256: ca7da1233a8c973e8fd1829323766e95c27f4b9edc9905ea8ae08a36730fe120
font_01_sfnt_off0000f7f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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