Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc6ae0accd67d1d0…

MALICIOUS

PDF

95.8 KB Created: 2021-06-26 08:12:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 127100eea013260283d2d008768c3ad4 SHA-1: e4561157771667847d4f66473982ce7e7c925a71 SHA-256: bc6ae0accd67d1d0e31c9c53073f2cda015625c500861997d0d8a71127dcd654
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'. The document contains a link farm with numerous URLs pointing to compromised websites and disposable hosting, suggesting an attempt to lure users to malicious content. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 6

  • 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.
  • 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://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/977aa0c1e3364a68180dbd4c524c113f/6414749198.pdf
    • http://signexpowholesale.com/project-new/christianbook/upload_images/file/76879466107.pdf
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a842cd5d921---kuvepejimapeji.pdf
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eaf9ce6e25---nidifarasu.pdf
    • http://esoftland.com/userfiles/file/61817907755.pdf
    • https://asoriofrio.org/ckfinder/userfiles/files/88078088375.pdf
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079168089a9c---noleseg.pdf
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f468b08cd9---merejuvu.pdf
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca7e0cfe95---pepetojipudixisivamaz.pdf
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/0a7a3bc33db147143cbbf0e9385aea7c/15839110663.pdf
    • https://gofropack.com/wp-content/plugins/super-forms/uploads/php/files/87861064c6f96e13d7431a9502d6e71c/pogokokutesadufebolo.pdf
    • http://golfproradost.cz/webpagebuilder/ckfinder/userfiles/files/jafidarunavokaj.pdf
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/jmri1v029ab87c9eadsftg6rm6/mavut.pdf
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16085f8661e87b---38823212163.pdf
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbcfc289173---jewofexubuguvosewo.pdf
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/5baa5c49aa07b77cbc720ae325d8c8ab/1193894971.pdf
    • https://samowar.me/userfiles/files/lexeduziru.pdf
    • https://angkorphotographyguide.com/userfiles/file/57694766754.pdf
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/p3sl7mqjclvhtberje86475epe/94172488517.pdf
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/1lqg3vlc87kmkge0dls6b4q37e/20601233894.pdf
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4a02713aa---gagetibolibijamufa.pdf
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/1dr6n95td72bpu31mlo8nbf7t0/91378456616.pdf
    • https://aljazeerahpetroleum.ae/userfiles/files/taxiwagalojemuve.pdf
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/852f51ba4c982c44b6f48d3b697741b8/lijinubadegudag.pdf
    • http://manninareunion2012.com/clients/0/03/03b30fdf9aaeeba733afadbef254ff7b/File/zuzogamuvalaze.pdf
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160945a722550c---tedulesubixulijateba.pdf
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609b125f2672b---39931638221.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=physiotherapy+abbreviations+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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe0c.bin
3523486772172800a6c58712936965475fdef93f1d2695c0a886a4c581183eca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0C 17172 bytes
font_01_sfnt_off00012a9b.bin
fa95dc19acd8d05d111fda16e1aec79cd16a8920793410b2d1998db5fe72fae4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A9B 10872 bytes
font_02_sfnt_off00014388.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14388 16792 bytes
font_03_sfnt_off00015b99.bin
00b1f632e8afe72716c8bcdb76b7901b56c060d1dc0f96f3f5c1b8373b85735b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15B99 16140 bytes

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