Malicious PDF — malware analysis report

Static analysis result for SHA-256 bae17e7186154482…

MALICIOUS

PDF

85.0 KB Created: 2021-09-22 22:03:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 586ab1fd5ea7702ba44387844d741dc6 SHA-1: 39a5e2b9047dc80de666d87f402bd403bf229398 SHA-256: bae17e7186154482d6df5000882b65f21faec6a416b7affe2ff293c199944fb5
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains embedded JavaScript and numerous links pointing to compromised websites and disposable hosting, suggesting it functions as a link farm to distribute malicious content. The primary attack pattern involves luring users to external sites via these links, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • 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.
  • 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=watch+when+calls+the+heart+season+6+online+free PDF link annotation
    • http://motoren-adachi.com/js/upload/files/latez.pdfIn PDF document text
    • http://serenetour.com/image/upload/File/girewo.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613dc448e4430---kenogesimigejonepufulat.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/85d4acef6813a8ac5afa421ccf2c88d5/zijonimonakaser.pdfIn PDF document text
    • http://orthocarecentroortopedico.it/userfiles/files/37316390699.pdfIn PDF document text
    • http://millionsdiscount.com/mo_images/files/pepupobufaw.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1614419c72b886---91715755390.pdfIn PDF document text
    • https://www.iieng.org/editor/ckfinder/userfiles/files/tezajug.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161476f848fd48---83915412544.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/nudopubarazibakagosi.pdfIn PDF document text
    • http://nbnjl.com/userfiles/files/bosasimux.pdfIn PDF document text
    • http://njuhome.pl/ckfinder/userfiles/files/63990360167.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1612f0cdc8c962---66148116441.pdfIn PDF document text
    • http://paykaaluminiya.ru/ckfinder/userfiles/files/senopajituvikurojome.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/3f549c3172fb714b601ba9a15704167d/13181355593.pdfIn PDF document text
    • http://poltinka.ru/userfiles/file/zowatofad.pdfIn PDF document text
    • https://tnmkor.com/FileData/ckfinder/files/20210915_F916064C68D124EB.pdfIn PDF document text
    • https://spyboarcams.com/files/34557845328.pdfIn PDF document text
    • http://cctechlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sixesajiwiradejoma.pdfIn PDF document text
    • https://nikolsbeauty.com/webroot/f/uploads/file/94811600699.pdfIn PDF document text
    • http://kitpaisal.com/mypicture/file/64790542548.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136b3fc02587---75418332643.pdfIn PDF document text
    • http://planbmedia.hu/files/81278201434.pdfIn PDF document text
    • http://3bbb.fr/ckeditor/upload/files/49045005420.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_off0000e513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE513 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2A 10680 bytes
SHA-256: fa664a1ca32a044d8a82bc634f43cb78c74b0425b525b3043cdecad01f3da064
font_02_sfnt_off000115af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115AF 18492 bytes
SHA-256: 27df4729dd1c765a1d653f2021b2b6c1a2636b595a5869bb51b6f7d8ae3061cd

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