Malicious PDF — malware analysis report

Static analysis result for SHA-256 02067001016322ec…

MALICIOUS

PDF

81.9 KB Created: 2021-09-02 04:50:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ba37d6cf1781b5100b79f60768f47fdc SHA-1: d4fd26c9f500dbe565f2d201223aef817129d4dc SHA-256: 02067001016322ec366e6e2ce032b6f6401f4a9e230bde1c6fde775a02d0cba8
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains numerous links, many pointing to compromised CMS uploads and disposable hosting, suggesting it functions as a link farm. These links likely lead to phishing sites or further malware downloads, aiming to deceive users into visiting untrusted domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/0874e1c1f7c66e8130586c45819015a5/mitemusilixiwogeranaku.pdf In PDF document text
    • http://bigandtallking.com/userfiles/file/tolepuzoma.pdfIn PDF document text
    • http://red-persimmons.com/upfiles/editor/files/besaxotagub.pdfIn PDF document text
    • https://sitpchemcieszyn.pl/_sitpchem/file/femapukexesukatubol.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074186b4374d---32067614741.pdfIn PDF document text
    • http://barbusci.it/maisUserFile/file/37716367698.pdfIn PDF document text
    • https://traffictkt.com/viking1/uploads/files/33553148705.pdfIn PDF document text
    • http://trufeel.com/ckeditor/ckfinder/uploadfile/files/tolamaliwukeguripimimo.pdfIn PDF document text
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607836f28d584---wamewakelokajitabeguku.pdfIn PDF document text
    • http://gernano.eu/gfx/userfiles/files/mifomimopalifafofokiviva.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c4893d1196---dunilarosulafexivididu.pdfIn PDF document text
    • https://szallas-karpatalja.com/upload/95088056760.pdfIn PDF document text
    • https://mobiligennari.com/userfiles/file/82807573236.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160bb4e2d31469---9054385226.pdfIn PDF document text
    • https://akemi.ro/hirek/file/buruwavozulonuxuja.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/291447013813.pdfIn PDF document text
    • http://cz-synergy.cz/data/file/bujabusozineziwatuguma.pdfIn PDF document text
    • https://atkarisuli.hu/userfiles/file/napeximodokubosideba.pdfIn PDF document text
    • http://liburnia.pl/userfiles/file/24072633724.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8de56097bd---57885547069.pdfIn PDF document text
    • https://ensasoft.com.tr/wp-content/plugins/super-forms/uploads/php/files/jl4uctjaf7pkmqdcb1udndbugb/89177203530.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c30a157763f---44645312236.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16089065765c01---modoxevavugazu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=how+many+vertices+are+in+a+pyramidPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC85 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF497 16868 bytes
SHA-256: 663dc890230ee1a3a9e61e94b9339988b1350a614bc65d5ebfed89fecd2286e6
font_02_sfnt_off00012040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12040 10888 bytes
SHA-256: 317e16d3c66475ac340fc0041a4441bef841071cd328e8c9161f09a29b376669

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