Malicious PDF — malware analysis report

Static analysis result for SHA-256 1954b1148e526dbf…

MALICIOUS

PDF

74.8 KB Created: 2021-10-05 09:04:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 01052a25377fa9dcfe63063c906d3e7d SHA-1: 591bd72b4f09c27ddcae40e9b7d5ddf2234c97a2 SHA-256: 1954b1148e526dbfdc5ba0754aa68fb235dac43bbf49ed7e3c1594da121bd682
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high number of external links, many of which are hosted on disposable domains, indicating a link farm designed to obscure the true destination. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7633

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://lrsinc.co/userfiles/file/5509496869.pdf In PDF document text
    • https://aalatour.com/basefile/b2caalatourcom/files/87529594091.pdfIn PDF document text
    • http://esistore.be/userfiles/file/71149849472.pdfIn PDF document text
    • http://residencecarlofelice.com/userfiles/files/91420846679.pdfIn PDF document text
    • http://52fotki.ru/ckfinder/userfiles/files/76518006064.pdfIn PDF document text
    • https://tradingphrases.com/userfiles/files/49798155441.pdfIn PDF document text
    • http://e68momo.com/shopadmin/upload/files/gatid.pdfIn PDF document text
    • http://quatangsongvan.com/hinhanh_fckeditor/file/38242958620.pdfIn PDF document text
    • http://triple-a.co.th/ckfinder/userfiles/files/57968300209.pdfIn PDF document text
    • https://wittnebel.dk/file/64305328110.pdfIn PDF document text
    • https://ginecologmuresan.ro/ckfinder/userfiles/files/72597335356.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16153b02dde827---33170081893.pdfIn PDF document text
    • https://vegastel.eu/components/com_mijoshop/opencart/image/data/files/lolezasujiguboresubuvadem.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/16158eee306de2---92499707707.pdfIn PDF document text
    • https://grupo-kayros.com/userfiles/file/gexegowozonewovusud.pdfIn PDF document text
    • https://foodsafebox.com/ckfinder/userfiles/files/26979240100.pdfIn PDF document text
    • http://yotlist.com/uniformkontakt/userfiles/image/files/mupupiworepuzeteraketeg.pdfIn PDF document text
    • http://apple888.vn/luutru/files/71648831284.pdfIn PDF document text
    • http://vuonlan.vn/data/upload/files/zimilez.pdfIn PDF document text
    • https://xn--z4qq44i.tw/upload/actfiles/32119064978.pdfIn PDF document text
    • http://dakdekkersindex.nl/images/uploads/saxazakamutesobu.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/511rch8m5jj7msm1pc8eh6vdb5/25171102102.pdfIn PDF document text
    • http://akademibt.com/resimler/files/rimerekedetegom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=after+we+collided+full+movie+eng+subPDF 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_off0000e800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE800 20212 bytes
SHA-256: 2454124e6375adb7a511073460b1172f9fc3fec0abfb710d86d90fd406897a2d

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