Malicious PDF — malware analysis report

Static analysis result for SHA-256 02c6d4a031034e77…

MALICIOUS

PDF

95.4 KB Created: 2021-06-28 12:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2680fc1f9d1d8e2436f1cba18ce270c5 SHA-1: 45bf1adbb528ab6c24899e86fdcb422cb04fc1de SHA-256: 02c6d4a031034e77c3179fdc1d965716e925aa3693d342c40bd4453d58a97932
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and flagged by an ML classifier as a likely advance-fee scam lure. It contains embedded JavaScript, which is often used to download and execute further malicious content. The document's structure and heuristics indicate it is part of a link farm designed to redirect users to compromised websites hosting malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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 http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/48f4314362f0eeb4fbfa44abdd47a783/donusap.pdf
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608f19ccf2470---mabomijowurozif.pdf
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ade3662ad50924115bfec104d9a35b3e/29576090351.pdf
    • https://aadhaarretail.com/administrator/imagetemp/file/73063942497.pdf
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1608e99727a763---kukes.pdf
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/c3ccf2e9d56961b43cd0b836a668d293/76474654461.pdf
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5d1e4fb24---42286383019.pdf
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b80cbe6a34d---54904081140.pdf
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/01c764438b09dbc9ecf20364c6e3f08b/gogitimofenogogamagan.pdf
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/2bc3f8a101fcb0c1dfceb76d04749e67/zixosemosololapovu.pdf
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b739722cec---kiropu.pdf
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160801fc8020b2---ruzujepipenasidofuf.pdf
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/ce23fa7d99693e5909329b786ef9f0f7/68143286255.pdf
    • http://arqing.es/ckfinder/userfiles/files/janowunusa.pdf
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/61a95acd556489788b450a832c6be701/lafuw.pdf
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/e94a3ca950ed6d2e6618bbf169be1d97/58034538993.pdf
    • https://imad0c0.com/js/ckfinder/userfiles/files/vaxubefusuwolovunebuva.pdf
    • https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/cc851d28aead8964fdde083b4cea6f5d/66577341177.pdf
    • https://a2designbg.com/userfiles/file/239903327.pdf
    • http://utuin.net/files/fckeditor/file/11688447665.pdf
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab88a710f00---wumoj.pdf
    • http://szsahsh.com/uploads/files/xejiwubutoxeket.pdf
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c67c4a213dc---37775418272.pdf
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/7dc9165c6207215f45f431792937a8d0/saximorozumutugibi.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=apps+used+to+draw+anime
    • 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_off0000f1c9.bin
084885a05fc3a92653e4e214f5aea3d30a74941d4794e3200cc9f6b31693d2d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C9 10676 bytes
font_01_sfnt_off00010a55.bin
8e2c7a3bf4113d159b5ca91d585c631944f93e27ad625acf401b21980af1047a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A55 17784 bytes
font_02_sfnt_off0001391a.bin
fcca37035df06e555c2991ff65faa0e8497ca6423bee408ebc46b3aef925b516		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1391A 16144 bytes
font_03_sfnt_off00014e90.bin
3aaa1dec854571e36234dc15a7ce861e9a23eec799ab8d492cf255db8f9f52d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14E90 1772 bytes
font_04_sfnt_off000156f8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x156F8 16792 bytes

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