Malicious PDF — malware analysis report

Static analysis result for SHA-256 7494ced884d8c8be…

MALICIOUS

PDF

100.6 KB Created: 2021-06-25 18:22:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3f82930cd701e6b98e695fb6bb50ad9d SHA-1: 0611fcc77a195ab3408ed138878458672d7201b3 SHA-256: 7494ced884d8c8be8cf2eca1eda8b9972e4bb3f35d8f8ae408f9d6105a7f6121
156 Risk Score

Malware Insights

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

This PDF file contains a link farm with numerous URLs pointing to compromised WordPress sites and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. The PDF structure and embedded URLs suggest it's designed to lure users into clicking malicious links, potentially leading to further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/edaca9eeda7933fc2bd78b73a0ccfef1/22831075648.pdf
    • http://2016montemayorreunion.com/clients/e/e5/e530e98a7ee505477716bae2fe71cdef/File/kosamoj.pdf
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608449668faae---16749932959.pdf
    • https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/8b6a002dba021b18a52640d8ee347021/52436376218.pdf
    • http://yearbookplus.com/uploads/ckfinder/files/lifibixisikijudu.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdfc34ea98---49369870725.pdf
    • https://zivotzaokny.eu/res/file/puvujotipolaxuworerexel.pdf
    • http://cunningham-reunion.com/clients/7/73/7399477c88ef979e1ad3ac38e42cffcc/File/fomuwi.pdf
    • https://karinbentum.nl/uploads/file/lesanufum.pdf
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16094ddac5171a---90479143360.pdf
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094182b64555---seked.pdf
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/af3039127ea86273169ee149eebea58d/xovubudobugatukexaduduji.pdf
    • http://seksdagen.nl/userfiles/file/54041115133.pdf
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160cdd0ce4fc52---37399299490.pdf
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/bed4de9108e0948ae2c37ba76b423541/62108127558.pdf
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160b5bc5ff0dd3---vixalajevodalub.pdf
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/jekk7ac55pas92lap8tvk29g07/27337962397.pdf
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/e5lqmgqb4v5hl900vb7mom3v3r/18996494726.pdf
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0897a967b---futovisurojorozi.pdf
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1609e09eec9450---51587786418.pdf
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085753662916---2487822037.pdf
    • http://megat.pl/uploaded/fck_files/file/28998103773.pdf
    • http://0-50.ru/userfiles/file/36715702689.pdf
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a56c5a94ffb---75562459816.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=catahoula+pit+mix+for+sale
    • 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_off000128e8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128E8 16792 bytes
font_01_sfnt_off000140ff.bin
9061c75ecf61130208f8534fc57070228f35d439a6148c22d56388aef2f3ff20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140FF 10752 bytes
font_02_sfnt_off000159cc.bin
8af25a9c3482e82235bbd72ff5a66d7c0b675d5dd8cde34a1f365be5a3925314		 pdf-font-stream PDF embedded font (sfnt) at offset 0x159CC 16796 bytes

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