Malicious PDF — malware analysis report

Static analysis result for SHA-256 480b62c6855a3160…

MALICIOUS

PDF

79.6 KB Created: 2021-07-07 11:03:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 7b015f49c8aca5b22c0999de92f720d2 SHA-1: 15e7aab333bd3168bb35cd0540fc0dd02e9ae463 SHA-256: 480b62c6855a31602ead035d00431f434dc6dd9739f4268c39c74938c6432e41
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7088

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://people11people.com/uploads/File/safisupefelapagasifavew.pdf In PDF document text
    • http://ixtvs.de/_upload_bilder/_filemanager/file/zawokidomel.pdfIn PDF document text
    • http://kelvista.lt/images/files/palafutesixexogokiw.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/60494283582.pdfIn PDF document text
    • http://autodilykanka.cz/cmsimple/images/file/xoxavu.pdfIn PDF document text
    • http://dok-vo.ru/userfiles/file/wepep.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607e8e6831e7a---fifegejat.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/dce86f20743ec12448443c74fe887e97/pizetegipalobiwenile.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607673e87f2e7---lewipegivubavebafabegig.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/tadodevusila.pdfIn PDF document text
    • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/1607881e8bfcaa---20133274966.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160752893588dd---vajowibodip.pdfIn PDF document text
    • http://osoboebludo.com/ckfinder/userfiles/files/zekorudizabawatowaw.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a6f4381e0---3513571775.pdfIn PDF document text
    • https://mebelihome.ru/upload_picture/27682333154.pdfIn PDF document text
    • http://billsky.ee/files/file/vuzetozekevagak.pdfIn PDF document text
    • https://autotronics.vn/userfiles/file/34456566499.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f20b031c06.pdfIn PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/ognvlek5mvk0g5itvic9je7io5/jitoka.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9c505c47f4---nilibojefotesem.pdfIn PDF document text
    • https://autotronics.vn/userfiles/file/50582061239.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/ha54bg4ua6dqup5fsqtbiqa3sh/balavipara.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e65d826a12---69452741851.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab284dd4033---10420019659.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071e3b560af0---zutupibobukowok.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=answer+the+following+questions+in+one+sentencePDF 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_off00010a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A71 18204 bytes
SHA-256: 12fa89f05d917b19652daefee3855bf850450f4ce9b790fb95e93c21c95d4cd2
font_01_sfnt_off00013942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13942 1928 bytes
SHA-256: 322aa38d65f6c86258ac32f37cfe855738c5fb65574142ecd16b3c7cca17234c