Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f2d4c9bbb705009…

MALICIOUS

PDF

91.1 KB Created: 2021-07-26 21:37:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 90f0e72cc88908e10cf5a86a70ac6b4b SHA-1: a0b8bbdd14bb3a0461a776581c54ed6fb18e46ca SHA-256: 7f2d4c9bbb705009760801a83c9ad269cf3e04071e06d26f74a6eee35dd85e96
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple potentially compromised or disposable hosting sites. The embedded URLs, such as http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16074748493e2f---88022166901.pdf, are likely part of this scheme to distribute further malicious content or phish for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/bc83d655f3f31ecbb0c7feaaf52ab1fb/72120904751.pdf In PDF document text
    • https://perfecthospitals.org/FCKeditor/file/gefukitikabatata.pdfIn PDF document text
    • http://cdio.vn/uploads/userfiles/file/81654466370.pdfIn PDF document text
    • https://vandolderskb.com/images/usr/82130586899.pdfIn PDF document text
    • http://africanhairbraidingsalon.com/userfiles/file/pixipujevaxowefob.pdfIn PDF document text
    • https://fedico.ca/upload/editor/file/relofipotadexasozo.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608c5aaad0500---fivitugusowajemexemefepa.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16074748493e2f---88022166901.pdfIn PDF document text
    • http://classtool.info/upload/files/1332021071.pdfIn PDF document text
    • http://imhyuk.com/imhyukeditor/userfile/file/dotavomuxefak.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160acebae74dea---xanobeverupunomagirowixeb.pdfIn PDF document text
    • https://airshow-bg.com/file/12324475839.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/29l5p6pgmf874is17a8u1bl3nm/53306368165.pdfIn PDF document text
    • https://anjingliar2.com/contents//files/bokepokimabamu.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/98519071656.pdfIn PDF document text
    • https://guapa2.com/admin/fck/file/jujegisewu.pdfIn PDF document text
    • http://mpti.ru/userfiles/file/wiwomabojerusejixukuriv.pdfIn PDF document text
    • http://walkofagesvt.org/clients/0/0e/0e42319052772b195a43ba3ede0f03e0/File/10185824109.pdfIn PDF document text
    • http://carroll1975.com/clients/4/4e/4e2b018d07aaa5a30c3e4fca1c7a8df7/File/67262977937.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/f7eccc3c74e3e517a4e39dbb75aa579e/todobalakirof.pdfIn PDF document text
    • https://kisikana.hr/userfiles/file/mobesowatusawofazapap.pdfIn PDF document text
    • http://philipwillettelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/ralepuf.pdfIn PDF document text
    • http://domholidays.com/userfiles/file/gawawusazuribepiwam.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=descargar+libros+de+teologia+gratis+pdfPDF 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_off0000f967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF967 19812 bytes
SHA-256: 8ed0051c6ca4ce222808e37cd54c2e6a2951b2b47e97fda6494fcfdfc077f047
font_01_sfnt_off00012b92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B92 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000143a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143A9 10832 bytes
SHA-256: 09867fae60bcbcd8e752db4dc56892ca820d2d74ab109b8cab048016f90548e3

Open this report in the interactive analyzer, or submit your own file for analysis.