Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d38097f782dc319…

MALICIOUS

PDF

85.9 KB Created: 2021-06-26 15:00:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 24eb3ea45e986ef14f4d98cec6944feb SHA-1: fea050854a9e8fcfd26ac1a928e38d114068fe35 SHA-256: 9d38097f782dc319731751fb886cbebe45389e1d496045d01a6214527855a03d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://drafthe.ru/uplcv?utm_term=pho+snowden+river+parkway
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/98a56e7e814022062d21a62e2c900e84/75576894711.pdf
    • https://agatanorek.com/files/file/20914575776.pdf
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5599a1ad3---fonulekaga.pdf
    • http://humanitool.ru/userfiles/file/xawiseduzitiwixi.pdf
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160736dc5cf6b4---72733715751.pdf
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0e6b83c32---wefafiwowubezedolug.pdf
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3b36c3641f---laxibozinututiwikete.pdf
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160861b0ea3cc7---53282749585.pdf
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/934b466ef5e1ac0a9b8948e8f6f1e973/xivexofem.pdf
    • http://www.valathors.com/ckfinder/userfiles/files/megaterew.pdf
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ace812eccb7---65526551813.pdf
    • http://nakatka.com/files/file/gavakakesifege.pdf
    • https://alnahamgroup.com/userfiles/file/zufotanaxunegepado.pdf
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/29lllri29m0i8inmkc3kqsmtsb/79908822852.pdf
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae36e00d8cb---37720094519.pdf
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3e240071f1---jipojedaxamo.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/e89ee6f2e436e22a19d9585a6ee6bb6e/53149855065.pdf
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/b0b4c7f0f8e2475be46fe5299f0355ac/sinozafakidowamet.pdf
    • http://ventilyatsia-v-sochi.ru/ckfinder/userfiles/files/27040024460.pdf
    • https://senhewood.com/d/files/xabitoxetawamigolixa.pdf
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/a98b7fc7cf0909b74373d13ad4dfe00f/tatunozimivowovadopikuto.pdf
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2489523e65---43195198599.pdf
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608f567a63d24---mulewegaroj.pdf
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/jpf93bf7l09fobc5p3c23tctv4/89680259491.pdf
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16097831e8bcbb---74327374358.pdf
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160776bb4c9496---14725295929.pdf
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/dvr8k8op2gelfkmhrsok09hejn/97961287237.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec63.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC63 16792 bytes
font_01_sfnt_off00010475.bin
2cff1166fd633300b111ba232bc0c81a78365d44078a2dc987757c13d7e80653		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10475 17208 bytes
font_02_sfnt_off0001317d.bin
32ffe4d63873b90784a726670e2466ebce0bc6252b1e9fe9ad9531137b0204df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1317D 10704 bytes

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