Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ddd5d2d0d64413f…

MALICIOUS

PDF

73.4 KB Created: 2021-07-31 01:00:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: df06b335e1b172e84dc6ea3f220160ad SHA-1: 69a4ae76e4fe278ae6bbdb07cc9955fa6d640e95 SHA-256: 0ddd5d2d0d64413fc88d0e990e6173b0e49302247f4f26282ed528c1f041005a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs pointing to compromised WordPress sites and disposable domains, indicating a link farm designed to redirect users. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The primary function appears to be directing users to potentially malicious or phishing content hosted on these external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

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 https://crewmak.ru/uplcv?utm_term=ejemplo+de+texto+explicativo+corto+para+ni%C3%B1os PDF link annotation
    • https://newtop-eg.com/userfiles/file/sisidozedebonoruxubavigoz.pdfIn PDF document text
    • http://ecandrychow.pl/Image/files/53382815646.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/ba41a620090d4cad85fe5b5f069dafee/vilasipewevelovunuva.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bced254e2fb---zixuvorumeg.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c750c0e356d---bevatudanixurezifipumi.pdfIn PDF document text
    • http://www.bash.cl/media/file/basaxumuj.pdfIn PDF document text
    • http://soldresold.com/Shradhdha-Mehra/soldresold/final/ckeditorimage/files/71200195517.pdfIn PDF document text
    • http://citescolairedeledit.com/include/file/xusudizitixewogetufib.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079b42635128---73446728936.pdfIn PDF document text
    • https://gagiongvitgiong.com/ckfinder/userfiles/files/tebowavubamibisolosuw.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/uiqbv7uuv4i7leudmprf2b6on0/jaxowol.pdfIn PDF document text
    • http://akbarestate.com/survey/userfiles/files/luwudamukufo.pdfIn PDF document text
    • http://hoangle.vn/uploads/userfiles/file/tibirezulemutate.pdfIn PDF document text
    • http://chocoenglish.com/_UploadFile/Images/file/29587861879.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/0d777a958d27c9fdda6504ca02655309/603214777.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083f2f61fce7---99084890656.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/cd0aa370da506d74f981e89da08ded4c/vawosunatojugewuzukal.pdfIn PDF document text
    • https://agrilaui.com/userfiles/file/vawezesenarejo.pdfIn PDF document text
    • http://mdfgiare.com/upload/files/16403382827.pdfIn PDF document text
    • https://airin.lv/images/userfiles/file/penesuzutiguver.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/0d2e48417de643c7ddd780a08a889167/87113228398.pdfIn PDF document text
    • https://cambodiaangkorhomestay.com/userfiles/file/nidana.pdfIn PDF document text
    • 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_off0000f6fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FE 11164 bytes
SHA-256: 1cf22133ae8cc4ae0d1a65c177c16996fc72a3d081e7c787c2e660abce59f3a3

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