Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc7b00b0779606c…

MALICIOUS

PDF

257.2 KB Created: 2021-09-06 15:27:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: c410ff716aa67dd194f5ffdc31b97488 SHA-1: c5e2595ae1ccefacd9f220e885e076769fa3d5a6 SHA-256: ffc7b00b0779606c82983ca10958e143e272308c7666c4adef9dc7b4dbe79044
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious and likely phishing-related. It contains numerous links pointing to compromised WordPress sites and other domains, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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.
  • 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=economia+politica+pdf+libro PDF link annotation
    • https://alakharia.com/public_html/userfiles/file/49935211165.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609abe79a93f0---98303010732.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/nmj1a19bj0ig53f6hqr6vah5rc/fivonumatuxakuku.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/78f0ff1d9a03190b840f3a85c2f01c32/botasadod.pdfIn PDF document text
    • https://apsco.ly/userfiles/files/dixoludemewelorevipexula.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/13613e2e6f175a058b9139e65a515239/nuzomuwawemiwuxomevo.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/3c9cb4d910844ef54ff244521afb6d5f/pupovupitis.pdfIn PDF document text
    • https://scanclean.bg/upload/ckfinder/files/69454788361.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609d130f27f90---32678256479.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/e3181c4d00f7095e7631cbc08cf5bd1d/77970238725.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606ff811204fc---90322576838.pdfIn PDF document text
    • http://thaoduocquyhiem.com/userfiles/image/file/94084474132.pdfIn PDF document text
    • https://artinterior.bg/userfiles/file/29058468665.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a62b2fd4434---naziliretizan.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/7b33d7b58d7a2ad7d43863521a040494/volelutarojovabakin.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16099d8b1bb01d---76851694040.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/f8cb2d9ecdeef15663146c3bc75c11d2/10878944294.pdfIn PDF document text
    • http://cukierniabrzezinski.pl/www/artizam/fck/file/goweduzepijera.pdfIn PDF document text
    • http://foto-preiss.at/upload_files/files/gadalig.pdfIn PDF document text
    • https://recapress.com/ckfinder/userfiles/files/bubonobirole.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bbd89715502---94924783759.pdfIn PDF document text
    • http://rajskiewakacje.pl/userfiles/file/motomunera.pdfIn PDF document text
    • http://greenbiotech.vn/uploads/userfiles/file/67226163694.pdfIn PDF document text
    • http://carefirstyoungatheartgala.com/clients/b/bc/bc61c41cf33a111e4089ebab1e34a2ce/File/74980531304.pdfIn PDF document text
    • http://jessie.vn/images/ckeditor/files/98607731868.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000392a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x392A9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0003aac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AAC0 10604 bytes
SHA-256: 674e0f54cf60f4544983671145fcea9977b6f7e2434eadf2a2a34dbd4b1ec5a7
font_02_sfnt_off0003c2a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C2A0 19544 bytes
SHA-256: 6d9e454239d57147637688f169b3a83a89cc1e8c2c69a44d17255f791d124625

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