Malicious PDF — malware analysis report

Static analysis result for SHA-256 095381fb8c61d7c9…

MALICIOUS

PDF

67.9 KB Created: 2021-08-25 03:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: f8f43da0a942d2b7accabc8a4c74163a SHA-1: 69bee7903c8eab8bfa36f5b82ce192a91733cf23 SHA-256: 095381fb8c61d7c94956997514ca0ba59d3817099828c675f5e6b5d7a3439229
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It functions as a link farm, with numerous embedded URLs pointing to compromised CMS upload directories and disposable hosting. These links likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8341

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://taskentcompany.com/userfiles/file/60174702182.pdf In PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/e91efc2f618c3de7a142b4ac76959949/rogefivit.pdfIn PDF document text
    • http://instant-image.net/UserFiles/Site/File/pedokoxenisavenikoku.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16092344cb7d37---31614292409.pdfIn PDF document text
    • https://teenvolunteerhouston.org/wp-content/plugins/super-forms/uploads/php/files/88fd62bb91e4fb1d7afa231105d84cf6/vusosowaverixalilusu.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/9377156455.pdfIn PDF document text
    • http://artsar.pl/userfiles/file/85988251416.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a59bda4f34a---9195802418.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/44263336756.pdfIn PDF document text
    • http://zonweringbelgie.com/ckfinder/userfiles/files/44601227572.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160bc768c9bc2d---befaranemipuzepur.pdfIn PDF document text
    • http://bjeclinic.com/ckfinder/userfiles/files/befubomon.pdfIn PDF document text
    • https://cowichanseniors.ca/userfiles/file/23818183799.pdfIn PDF document text
    • http://spostojow.pl/userfiles/file/25206824868.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3482397578---86761969265.pdfIn PDF document text
    • http://dreambeauty.kr/upload/fckeditor/file/50647845895.pdfIn PDF document text
    • https://austdoorcaocap.com/upload/files/laberuz.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608d474fe8bfe---tukakew.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d74ee8800---2857648754.pdfIn PDF document text
    • https://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/3a6d28d4ea2f247d3af335e59a44b19f/8590455256.pdfIn PDF document text
    • https://cualuoihoanmy.com/uploads/userfiles/file/xuvitofadovomeretirewex.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608a4826e4f43---xoremisatatukebejubuweka.pdfIn PDF document text
    • https://paradigma.bg/uf/file/ziforefujuxunonetu.pdfIn PDF document text
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f39700cffc---46443657991.pdfIn PDF document text
    • http://gadkowski.pl/repository/filemanager/file/59200859293.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=examples+of+dematiaceous+fungiPDF 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_off0000e28c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28C 11048 bytes
SHA-256: 4425d8d313c3dc04b50dc697233edb111c5931ffa17901dec1ca5bb8713438e2

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