Malicious PDF — malware analysis report

Static analysis result for SHA-256 47042b48b9e8310f…

MALICIOUS

PDF

83.3 KB Created: 2021-06-26 14:14:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d45681c8669a6643a2864c87d576095d SHA-1: de5705a55fa37c8ded4ce663682bd99b619de494 SHA-256: 47042b48b9e8310f08bb72b29a7b74d8e4a760af5f05a7d407f1e664ead2506b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous external links, many hosted on compromised WordPress sites or disposable domains, indicating a link farm designed to lead users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a common phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • 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.
  • 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://cructi.ru/uplcv?utm_term=star+sp300+printer+troubleshooting
    • https://maisonforville.be/documents/file/lizuvolor.pdf
    • http://midlandhigh65.com/clients/6/68/682e31fde28f8c6bff7ebba57332ef5f/File/rabugelupisezixixikit.pdf
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/dusod.pdf
    • http://thaoduocquyhiem.com/userfiles/image/file/95135844267.pdf
    • http://herningbadintra.dk/app/webroot/upload/files/gegaselujanigo.pdf
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae3e538b709---89393455850.pdf
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/e3ed6c1851060ac2b751079ae28b3d07/2780502720.pdf
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/8eec917037fd60b610d87ce514e786f0/zofatokaxojiwes.pdf
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/0608360ab97bedfd28a1dddf01ef8c9b/mekodotemuvavazex.pdf
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/jhe0717em60mhq5ipo7jmhs531/38811891637.pdf
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16077d984cd4e0---kotakapikizefizajedurixup.pdf
    • https://greenlakepaint.com/ckfinder/userfiles/files/48724665011.pdf
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/p7e2csqjccl7ltd4rtilasha9k/tobobuvivikasomenuvuj.pdf
    • http://didocrosby.com/imagenes/file/wesixaripavevadarakib.pdf
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/6bb855b14f645534c3ea332e856ad5a3/pesoza.pdf
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a31d96c9ef1---32936633170.pdf
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/a30a050395a1a3372e102056ca30048a/refigenejaro.pdf
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/a2dfc45b7d0fbe7a54eb27c15842ba26/22266872508.pdf
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16082fd6fd7a52---jesesonatovowotodo.pdf
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/10d591020e274ad19a08ce8e8dac5326/1282308737.pdf
    • https://jordan.si/dokumenti/file/69128312943.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a66c5c70083---15000812806.pdf
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16075c3c92f41f---xenaremobogipimuso.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_off0000e22d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE22D 16792 bytes
font_01_sfnt_off0000fa44.bin
a3596dd9a9db4588c97fe8302a7be686ccc4005a1e87858b5a9ced4938d0e3ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA44 11140 bytes
font_02_sfnt_off000113eb.bin
66a5c016e8d0196480395b4d00307a15c2fc20d6df46fe7eb8a92c3e23cbb883		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113EB 16840 bytes

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