Malicious PDF — malware analysis report

Static analysis result for SHA-256 96386060794e852d…

MALICIOUS

PDF

81.0 KB Created: 2021-09-02 05:57:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: e2594b32053134d454563b040c946472 SHA-1: 5764ce7d547ac173abb78a92700e868de993ab02 SHA-256: 96386060794e852dea4b7c3178ce1a0f8621663be6a1c1e83b7799a094b11034
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF sample was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains embedded JavaScript and numerous external URIs, many pointing to compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The embedded JavaScript likely facilitates the redirection to these external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pixomot.ru/uplcv?utm_term=its+and+it%27s+difference PDF link annotation
    • http://td-mg.ru/uploads/files/gifitab.pdfIn PDF document text
    • http://szyldkj.com/luodan/images/userfiles/file/ridixoj.pdfIn PDF document text
    • http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/59641375171.pdfIn PDF document text
    • https://mygo.com/ckfinder/userfiles/files/55782930158.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fbfc6c395e---3968049047.pdfIn PDF document text
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/nefinisuvakigudiviwobu.pdfIn PDF document text
    • http://playfromhome.org/clients/4/49/49939bf6a151252ba1adfe53d1befa29/File/nemikamoxasutowodaxij.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160a2afc641575---paseretafuboviduzabil.pdfIn PDF document text
    • http://bloomx.com/sites/all/sites/bloomx.com/files/25303826944.pdfIn PDF document text
    • https://aashianarealty.com/file/33031157352.pdfIn PDF document text
    • https://atvatextile.com/upload/ckfinder/files/68475340606.pdfIn PDF document text
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/mvvpsto54v4a85cd7ej6r7jo82/vivexalamalilixag.pdfIn PDF document text
    • http://sallytour.com/FileData/ckfinder/files/20210730_1A0E8C72327526B9.pdfIn PDF document text
    • https://asi-filter.pl/files/file/fivarisutujurifimuw.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/033bf985b8f057e93aaeb36d327d271b/43018234160.pdfIn PDF document text
    • https://dutchfansitenetwork.nl/ckfinder/userfiles/files/mewejakidodunupudedagobix.pdfIn PDF document text
    • https://bdblue.com/ckfinder/userfiles/files/jubedofitujoforipagafub.pdfIn PDF document text
    • http://www.puhito.hu/uploads/16373221084.pdfIn PDF document text
    • http://iziusb.com/userfiles//file/84814572475.pdfIn PDF document text
    • http://armanetti.com/images/kevijagexilogaviwuv.pdfIn PDF document text
    • http://sherwoodchambergolf.com/ckfinder/userfiles/files/fowabubomovoxo.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f808e84acc4---puzepapufozewisimogobi.pdfIn PDF document text
    • http://fslawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wologinakonegipugikebuk.pdfIn PDF document text
    • http://epoch-making.jp/js/upload/files/9683165504.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_off0000d9cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9CD 10288 bytes
SHA-256: 76457fdbcbc221667f17eef9aebae396ba15229b9d652e82739c562632e84a5f
font_01_sfnt_off0000f11e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11E 17464 bytes
SHA-256: bbda6b33e5f10173731db21704751f0584138b00e63ad446a98ffbd883d9abdc
font_02_sfnt_off00011dc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1