Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a1221ad77cfb4e…

MALICIOUS

PDF

80.4 KB Created: 2021-09-14 07:01:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: dd01dbbd44244444909dba39eb53e183 SHA-1: e7a5a2d9841171f1d6a06b0b8e9e64c0f7e58346 SHA-256: 02a1221ad77cfb4e88338bb14e36293c3bc6237b6b67783ab338603026bc84c4
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. Static analysis revealed numerous embedded URLs pointing to compromised websites, indicating a link farm designed to redirect users. The PDF's structure and the presence of external URIs suggest it's used as a lure, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3497

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://oniceh.ru/uplcv?utm_term=fifty+shades+freed+streaming+movie PDF link annotation
    • http://hataylezzeti.com/resimler/files/61284624964.pdfIn PDF document text
    • http://lscapital.it/images/file/jokafurotarizosopu.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/0b2e9c597cdb221f36054ea596ad67af/bijarogu.pdfIn PDF document text
    • http://seasonsblinds.com/uploads/ckfinder/userfiles/files/3564848349.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613f0c7745b30---xejedekaluwaralunov.pdfIn PDF document text
    • http://www.injamal.es/nueva/ckfinder/userfiles/files/guvijesu.pdfIn PDF document text
    • https://wonwon.taipei/photo/file/pafataruwazapupoxamupolo.pdfIn PDF document text
    • http://b40555.handyfriendship.com/upload/files/ferel.pdfIn PDF document text
    • https://mamalight.net/business_school/uploads/file/20805837904.pdfIn PDF document text
    • http://tongkhomica.com/upload/files/moxosijobopef.pdfIn PDF document text
    • http://wawa757.com/uploads/files/bowilumimofakoniremupijoj.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/f0nq7hk3j1rs2m62br52ufvjdn/dewifufu.pdfIn PDF document text
    • http://baracenter.be/userfiles/file/15705528866.pdfIn PDF document text
    • https://byocamacho.com/ckfinder/userfiles/files/numudawi.pdfIn PDF document text
    • https://produktybhp.pl/pliki_user/File/28910804255.pdfIn PDF document text
    • http://emirates-offshore.com/uploads/image/file/85689239806.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16131ae2ada735---kuneximigadoburuliwo.pdfIn PDF document text
    • http://mimarathi.live/assets/ckfinder/core/connector/php/uploads/files/70194531213.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ff4e87bf58---mawulajotazexojelabulag.pdfIn PDF document text
    • https://gestcargo.com/uploadfiles/file/molizididiwazifebu.pdfIn PDF document text
    • http://sweethomedelivery.com/ckeditor/ckfinder/core/connector/php/uploads/files/waxipupepitiw.pdfIn PDF document text
    • http://sfipl.in/userfiles/file/japezomunade.pdfIn PDF document text
    • https://jimsdelibrookhaven.com/demo/jimsdeli/admin/userfilesfile/xafixo.pdfIn PDF document text
    • http://ksiclubbiz.ksiclub.org/svnprojects/DHD/Source/images/files/79144422553.pdfIn PDF document text
    • 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_off0000ea11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA11 10912 bytes
SHA-256: cd321f5526afb62801e3ca43f742dccae1f733b2874548d766148c3918b7a6a7
font_01_sfnt_off000102f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F5 17836 bytes
SHA-256: 64946097f0bcae3e62c74bde7cd13a7ef90d8fc902e16b55f6aa0e75c6349b9f

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