Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0e6faf32207dff7…

MALICIOUS

PDF

318.4 KB Created: 2021-07-01 14:22:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e5ae4c79ab23d7b533f8dc43e3dd8b91 SHA-1: 0b23ba1127b02eab5e49192190874cb7c74be169 SHA-256: e0e6faf32207dff7f3e9c01c02bdf59bfa2dd2fc61ee4939b0050a4e586f9956
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external resources, many of which are hosted on compromised WordPress sites, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a secondary payload. No scripts were extracted, but the presence of numerous suspicious URLs points to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9894

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.
  • 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://archism.ru/uplcv?utm_term=truth+in+translation+pages+163+165
    • http://amctop.com/board_data/editor_img/file/202106101443.pdf
    • http://saens-jpn.com/ckfinder/userfiles/files/56122598679.pdf
    • https://langumeistras.lt/i/File/notadavupobesosawekixorat.pdf
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/3dcdkkneql9p3vdajm117s8b22/pegob.pdf
    • https://blindnow.com/userfiles/file/rakifugisubebodewala.pdf
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608320c7a2bcb---9072705171.pdf
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/npaveuopv88du1ah1qlgm63m02/67999384334.pdf
    • http://tencanpowder.com/d/files/vebevemazafisaxanomulaziv.pdf
    • http://amandatravel.com/userfiles/file/lutasemidux.pdf
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/v6gf5lmdsndg85mk6vbnckde45/mipivunesiwojo.pdf
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070bf2a771ef---32761566729.pdf
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160722455c7233---78379343229.pdf
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086c5f0e0b45---42478655360.pdf
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cd03109123---3542042389.pdf
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/cnr56ofeqspoj4ldat65ctctsa/patimatowawawazomumud.pdf
    • http://pogotowienaukowe.com/Upload/file/kazudovemifedalexuzuwupow.pdf
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/57e0047e157aa9612e03f574113013f2/82606584728.pdf
    • http://raiders71.com/clients/4/41/4134020f2f298c111575624a380fabfc/File/46696554230.pdf
    • https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160794e36ca066---nenosazevebopesosudozolig.pdf
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2c1e4adef---vekijeranujatosopogapafus.pdf
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/25332ced9a1187a8aeac07934bf65f9f/28937563503.pdf
    • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160c59025df781---90676836141.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_off000488a1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x488A1 16792 bytes
font_01_sfnt_off0004a0b3.bin
a1b715f1566141041c7264453ff16bbdaba37401c8b6b15d4843158e5c0d57a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A0B3 19748 bytes
font_02_sfnt_off0004d101.bin
d5eb29f107b20504d1c04bbfb08ed0e701005ffb11ceb738ccc87bd8f0a1e8c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D101 11120 bytes

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