Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d76cd275023d45d…

MALICIOUS

PDF

81.3 KB Created: 2021-09-17 12:01:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: d7e160f633520ad81f967e14b9b393f3 SHA-1: 4169a07a1e482582c573fe0ffd72b6a78e904877 SHA-256: 7d76cd275023d45da35c06df7f4d29d90321ab666f4532823f3958382bfab799
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, many of which point to compromised WordPress sites and disposable hosting. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent. The file likely serves as a lure to direct users to malicious websites, potentially for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3255

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://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/408ec33dd9e2037943a74a7a4d889901/kaxasijozefawotibemeriw.pdf In PDF document text
    • http://king-pro.com/userfiles/files/87307498655.pdfIn PDF document text
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/c470bd0deb8fd8c37eabd571fedc3ca1/6213131806.pdfIn PDF document text
    • http://pm-property.pl/userfiles/file/gedililesa.pdfIn PDF document text
    • https://bem-sa.com/img/file/lomugutagesupuve.pdfIn PDF document text
    • http://johnmichaelharrisonlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/59777587571.pdfIn PDF document text
    • http://goldenstarhotel.vn/images/uploads/files/33749503363.pdfIn PDF document text
    • http://jtylek.pl/Upload/file/56203361480.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/16139053caee7f---14174825541.pdfIn PDF document text
    • http://reklama-v-sochi.com/ckfinder/userfiles/files/jikusugasolavodolemo.pdfIn PDF document text
    • https://www.kindspring.org/inc/ckfinder/userfiles/files/fajidepega.pdfIn PDF document text
    • https://jecoexports.com/ckfinder/userfiles/files/vamege.pdfIn PDF document text
    • http://e-menu.hu/editor_up/40389008406.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613f610430fb9---kilavipokunawuk.pdfIn PDF document text
    • https://jpjplumbingandheating.com/FCKeditor/file/siwejopelimu.pdfIn PDF document text
    • http://mxag.com/upload/browse/file/pidizoxiralowimozexovax.pdfIn PDF document text
    • https://etravelbox.com/scgtest/team-explore/uploads/files/18145044349.pdfIn PDF document text
    • http://hb-hospital.com/file_upload/fck_upfile/file/tadawimo.pdfIn PDF document text
    • http://www.taimaobi.com/admin/ckfinder/userfiles/files/8536664930.pdfIn PDF document text
    • http://kimwendelldesign.com/ckfinder/userfiles/files/jupixirutivaven.pdfIn PDF document text
    • https://davidfauquemberg.com/home/fauquemb/david/bbdg_site/userfiles/file/50430221000.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/eletrarbp3tuhbkurledmltpqr/dokonapivarawisitaxupevu.pdfIn PDF document text
    • https://fasaac.org/temp/files/lubalaki.pdfIn PDF document text
    • http://www.taimaobi.com/admin/ckfinder/userfiles/files/17929979886.pdfIn PDF document text
    • http://onlinemidias.com/ckfinder/userfiles/files/95664155834.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=world+war+z+game+apkPDF 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_off0000f274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF274 10504 bytes
SHA-256: 01e305b8f34dcb517457c9fec6a03d948e62a4f7f310cac9d92d285ef496932d
font_01_sfnt_off00010a3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A3A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1