Malicious PDF — malware analysis report

Static analysis result for SHA-256 e17073f9663a5289…

MALICIOUS

PDF

141.8 KB Created: 2021-06-30 10:15:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0d2215435c3490f17614799ddf7eb956 SHA-1: b691ff10c2eee8f38dfbcee79368d445d2a53fd2 SHA-256: e17073f9663a52892cf08023a4d18eb3ca0b4e5140c100aa4327ac26fb008498
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for distributing further malware or conducting phishing operations. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9303

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://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/07a7e97df6a644ccc6e92d8918ded971/wifozojelol.pdf
    • https://nothingbutsafetyglasses.com/userfiles/file/wupimemukixemuta.pdf
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095a63b6d366---jajiwalobafeso.pdf
    • http://aelma.com/sites/default/userfiles/file/mowafafa.pdf
    • http://hitecds.com/userfiles/file/60799663265.pdf
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/90e91c7d156cc6e3cc4d88159ec02730/zelivamevij.pdf
    • https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/fcfmedsib5o6ap7bj1ceckjgi0/rofijobepaduza.pdf
    • http://wjvanderheidedienstverlening.nl/uploads/file/tulimadefoxonuwoketefew.pdf
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c061ad8a51a---77880788726.pdf
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607b831ad957d---54227024011.pdf
    • http://gat-asset.com/CKEdit/upload/files/29115072441.pdf
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/5b32c6ed4e0a3bd89604017e135ef0b5/83051488557.pdf
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/p91o7m2tah4d2tv8gvqvib6602/filobazekibar.pdf
    • https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/6416ce76505221684af433da84eb2058/gubupotinuwoxu.pdf
    • http://stillwaterponies83.com/clients/74660/File/nowadavagefola.pdf
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a31f5183804---32589314874.pdf
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/10408772980.pdf
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/rg0ebbu1hvaicq96gsqtvec4qn/fekolaguguradoru.pdf
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/knjk8cuv02rp75lkt55au38s46/86342810890.pdf
    • https://jdrum-music.com/uploads/ckfiles/files/lupujatiz.pdf
    • https://actorconseil.com/files/file/tapekebegidusikunoxog.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/1281796e0b1a576f7bcdce83bef4617d/wedadaxufigiw.pdf
    • http://jfhcoaching.nl/userfiles/files/66145161719.pdf
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c86e6b9d6c---fewutudeputilujida.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=final+fantasy+15+multiplayer+ps4
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000106bf.bin
b911ba6ca08565ab4ccb98e5579ad8ae4d9446a8f4bf0af4c689dfc5702c3ff2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106BF 10852 bytes
font_01_sfnt_off00011fe8.bin
84e10dd4b7954830bd0555f593a5185f1cf24a537e5494244d75c06eba0b3e5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11FE8 17900 bytes
font_02_sfnt_off00014ed5.bin
9036dded59b8ddf51e034ecd7b6d934b21aff682963fe72f0def4bf63b8ce6b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14ED5 64160 bytes
font_03_sfnt_off0001f8d3.bin
27fa49ca30b1f57c6e4f8b99ad1f73ead7010ce1f191e20d716503af09158f46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F8D3 16160 bytes
font_04_sfnt_off00020e4c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20E4C 16792 bytes

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