Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d361b25ca8991c…

MALICIOUS

PDF

67.3 KB Created: 2021-09-08 10:07:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ba84280e00e8e10d0c0a8eb34c451d59 SHA-1: a29ced241354a1466c2a892682c3e72b55eb59f2 SHA-256: c7d361b25ca8991c2a1d858f4baf92bd2b08fc90677fb4ffdb28365d46ad0b6c
124 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to compromised WordPress sites and disposable hosting, indicating a link farm designed to distribute malicious content. ClamAV detected this file as 'Pdf.Phishing.Trojan', further supporting its malicious nature. The presence of these links suggests the document's primary purpose is to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3806

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://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1608fb8e557738---9780614750.pdf In PDF document text
    • https://ymy-tea.tw/upload/files/45130321191.pdfIn PDF document text
    • http://wib24-admin.de/uploads/file/9159162102.pdfIn PDF document text
    • https://ietc-oman.com/userfiles/files/sulosiwuwavi.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071ae6c5cb6f---depotuzazoza.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ad58f740b7---1352732061.pdfIn PDF document text
    • https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/qut457m9t1rklsql7a1m24rbah/nigokotukofamufetijazore.pdfIn PDF document text
    • http://phucuongplus.com/upload/files/39921694691.pdfIn PDF document text
    • https://bancodevida.com/bancodevida/admin/images/image/file/tedepuzogok.pdfIn PDF document text
    • http://csc020.com/userfiles/file/20210728010656_cb4wvi.pdfIn PDF document text
    • http://hhs63.org/clients/8/88/88ec95b665b56da82b1de85f097fba10/File/4982314542.pdfIn PDF document text
    • https://aglogistics-bo.net/userfiles/file/46127487462.pdfIn PDF document text
    • https://www.pirkitpadangas.lt/ckfinder/userfiles/files/83813687549.pdfIn PDF document text
    • http://namjapizza.com/app/webroot/files/pegudaxomev.pdfIn PDF document text
    • https://oteaexpert.fr/cite_imgs/file/dexativalozoxupubupe.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135e796ecce4---wafawojarin.pdfIn PDF document text
    • http://yonseri.org/userfiles/files/ruwakafezazisoxunisex.pdfIn PDF document text
    • http://patrick-jardinage.fr/ckfinder/userfiles/files/xiliwudobutuzezofubov.pdfIn PDF document text
    • http://bsp-oblspl.org/ckfinder/userfiles/files/31876097364.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d46fc382242---puxugiwekuxura.pdfIn PDF document text
    • http://teakdeck.pl/files/file/xofawozadepep.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134aef653f2b---26295155909.pdfIn PDF document text
    • http://hopkinshigh62.com/clients/7/77/7764523e397120ad9b09b1da26998858/File/gefegegoxidafeserogi.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/dd5865cd41f7fcb2842f506a5b08e544/bosetedujukawo.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b04e722ab49---zopanuruxomopude.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=music+conducting+lessons+pdfPDF link annotation

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