Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ab1a55b37c8942d…

MALICIOUS

PDF

77.6 KB Created: 2021-09-18 14:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: daac3e75ed618a2ea770c52bb93b5ad0 SHA-1: 42997e444806633c6178916f95ccd9a7ee4aa86b SHA-256: 0ab1a55b37c8942d3d3f37c6c9e023c838be35e3298dc8d81665ba3d51625c01
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links, many pointing to disposable domains, and is flagged as a link farm. The ClamAV detection indicates it is recognized as a phishing or trojan variant. The presence of external URIs and the structure suggest an attempt to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4596

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://srmhomes.com/images/bulk_images/files/28008699516.pdf In PDF document text
    • https://balbok.net/admin/ckfinder/userfiles/files/fupobegejuvutonu.pdfIn PDF document text
    • https://bisleriwheel.genefied.co/ckfinder/userfiles/files/dozowefegitamiz.pdfIn PDF document text
    • http://gaziogluenerji.com/images_upload/files/91202270115.pdfIn PDF document text
    • https://osiindia.org/ckfinder/userfiles/files/69268852243.pdfIn PDF document text
    • http://a1-automotivegroup.com/upload/files/73907826644.pdfIn PDF document text
    • https://la-klamm.org/userfiles/file/fixofijefudosa.pdfIn PDF document text
    • https://vinacoma3.vn/userfiles/file/39784893346.pdfIn PDF document text
    • http://gaia-onlus.org/userfiles/file/11165450645.pdfIn PDF document text
    • http://fitviewer.de/files/file/52383875960.pdfIn PDF document text
    • https://websbag.com/uploads/files/fumametuvakekumiwabawux.pdfIn PDF document text
    • http://bowenlawmt.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tamisudumulom.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/11791339292.pdfIn PDF document text
    • https://oolong-dining-co.com/webroot/editor-uploads/files/77392890447.pdfIn PDF document text
    • http://sostrevalli.it/userfiles/files/63996402797.pdfIn PDF document text
    • http://pointerboards.com/uploads/admin/files/vemomiwej.pdfIn PDF document text
    • http://xn--2e0b95unoa536adofm5h.com/userfiles/file/gazabedaxabajuwebimu.pdfIn PDF document text
    • https://paulogomeslda.com/userfiles/file/4091982017.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/19d7ae7ef4d8e8f8d89301f3fbf4cfe4/84638673516.pdfIn PDF document text
    • https://3eyamaichi.com/upload/ckfinder_temp/files/20210905165925.pdfIn PDF document text
    • https://fceresources.com/ckfinder/userfiles/files/14546090916.pdfIn PDF document text
    • http://goldenagegroup.vip/userfiles/file/vamiboreguguzixu.pdfIn PDF document text
    • http://bielwod.com/userfiles/file/95986179485.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=fast+and+furious+6+full+movie+onlinePDF 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_off0000e3be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3BE 10828 bytes
SHA-256: c849b6f52580dacab1705d9569866179f9b55cf20ebd3eaa7765df817ed2f1d0
font_01_sfnt_off0000fcc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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