Malicious PDF — malware analysis report

Static analysis result for SHA-256 be6b500ebc24aa8c…

MALICIOUS

PDF

98.5 KB Created: 2021-09-07 20:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: f2a7f26fcb5cfc544b461febc0dbac38 SHA-1: ef7bd1f2fdad458c3b2272643e58c1e78c443f4b SHA-256: be6b500ebc24aa8c07b545ec0629f18cae0efcc979f34860eb79cdda9ef7a0bf
124 Risk Score

Malware Insights

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

The PDF document contains numerous links, many pointing to compromised WordPress sites and other potentially untrusted hosting. The ClamAV heuristic identifies it as a phishing trojan, suggesting the links are intended to lead users to malicious content or phishing pages. No scripts were extracted, but the structure indicates a link farm designed to distribute or host malicious files.

Machine Learning

  • Nyx PDF Classifier clean score 0.2108

Heuristics 5

  • 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
  • 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://kme.pl/global/app/webroot/uploads/file/16300975783818.pdf In PDF document text
    • http://hainescentreasia.com/images/file/buxiriwixofuraxolaw.pdfIn PDF document text
    • http://slphs66.com/clients/e/e6/e62fa13cff665df70d7481f632b33819/File/36589668706.pdfIn PDF document text
    • http://automozg.by/upload/editor/files/derukupuru.pdfIn PDF document text
    • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/5b980c2e8887b8378c8da12b358864c1/91543117205.pdfIn PDF document text
    • http://millionsdiscount.com/mo_images/files/fawibaga.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612e7a96569f2---jinipujone.pdfIn PDF document text
    • https://www.mediawerf.nl/bundles/store24backoffice/ckfinder/userfiles/files/76609658391.pdfIn PDF document text
    • http://colorfulmedia.de/fotki/fotki/file/gikenogejezifamife.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ada7e7be4ec---ladisarugutig.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1613428751b053---vepafabupufa.pdfIn PDF document text
    • http://gamjagolla.com/uploads/files/82502921420.pdfIn PDF document text
    • http://acmemask.com/upfiles/editor/files/7454136304.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae8342d3e95---59402627090.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b23916c0d3---tuwewikajirarujinur.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608c67e119017---munuwopixola.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/zuvefez.pdfIn PDF document text
    • http://netisiletisim.com/guvennet/resimlerfiles/saminoxinuxejugejipuduv.pdfIn PDF document text
    • https://ferest.ro/imagini_ws/48480893131.pdfIn PDF document text
    • http://naphotelbangkok.com/userfiles/files/3364137036.pdfIn PDF document text
    • https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/f6555b39232b4b478b9119b20c256dc1/moforuxadodekurivaji.pdfIn PDF document text
    • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/14550c8e3550ec4dd146cce03724f538/47934493824.pdfIn PDF document text
    • http://foxhill101.com/userimages/tixisoxatesigofegi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=international+marketing+multiple+choice+questions+with+answers+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D37 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00014549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14549 19896 bytes
SHA-256: afba1899f171634771885b8a4c6f202d128b40a7c920314f288989945cb47508

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