Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff02cdec2fed38e1…

MALICIOUS

PDF

109.6 KB Created: 2021-06-29 12:58:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 107fd84a6882ec105b3923ec7cb846ec SHA-1: 6946cf3444a32b28a652b872ed143919107c0704 SHA-256: ff02cdec2fed38e18d3d7081bcb6e451b59b762db12649261e165a1f9a88cad1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised CMS upload storage and disposable hosting, suggesting a phishing or malware distribution attempt. The presence of external URIs and link farms indicates an effort to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5383

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 http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/a4820627325e8f19380092162c09462e/rekagug.pdf In PDF document text
    • http://hytechplus.com/userfiles/file/nefexuwilabasavejogugog.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160da894af2a87---setabosube.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095c67dd55cf---mebibo.pdfIn PDF document text
    • http://mistral-paints.cz/userfiles/files/79725709605.pdfIn PDF document text
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/ddaff9c2d722948ffc7ef8fbe2235ed2/60627701666.pdfIn PDF document text
    • https://go2germany.ru/files/file/vurunamasese.pdfIn PDF document text
    • http://cokhibaosang.com/media/ftp/file/70472237139.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/file/moninovedimo.pdfIn PDF document text
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f81fe6fa26---rovavujiwiwafasugiziso.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16096bb913bcc4---gavipomuwavafera.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160830e753c333---27635410098.pdfIn PDF document text
    • http://dui-antidote.com/images/userfiles/file/82086620964.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/1606cd90f61dbc---26472750211.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3813ab7c57---46107713677.pdfIn PDF document text
    • https://amatnieks.com/pictures/image/61885354071.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/4877c2460530ebc9ce12eedc9ae7790b/wibupanesebusuberefogetix.pdfIn PDF document text
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/8vo5qddihsnj7ac9jiaubkk9qr/22440482066.pdfIn PDF document text
    • https://robotics-institute.com/wp-content/plugins/super-forms/uploads/php/files/g4hophmd4a6qct00tnfb5g4igc/mepisofuvarofalusofopof.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607bca1540b6d---45538352872.pdfIn PDF document text
    • https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/427b2ae4d379cd97ed8a195e78423c38/34404997442.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/498b1597be2cb7283dd41c9abce49680/dotepebuxuvebetewose.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/an8gsd5gldteetb0f1u158n84i/19540441609.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=stages+in+psychosocial+developmentPDF link annotation

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