Malicious PDF — malware analysis report

Static analysis result for SHA-256 1463bcc8838d8ae0…

MALICIOUS

PDF

81.2 KB Created: 2021-09-18 20:25:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 673de1738a94871e14ab6b11597db7f6 SHA-1: 312956a22be2f520d531465953f8b7dcac371065 SHA-256: 1463bcc8838d8ae08079c1cf5a5967cc216d118f36cd600cc4a14a1d4aa39aa2
126 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains numerous embedded URLs pointing to disposable domains, with one heuristic specifically identifying it as a link farm on disposable hosting. This suggests the PDF is designed to redirect users to malicious content, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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
  • 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://aayams.com/userfiles/file/kosenilo.pdf In PDF document text
    • http://ddaengshop.com/ckupload/files/xaniwilosolalofenonojop.pdfIn PDF document text
    • https://areicon.com/images/file/4642700358.pdfIn PDF document text
    • http://affordableadobe.com/ckfinder/userfiles/files/vegadujamavimikikaweva.pdfIn PDF document text
    • http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/kujabevo.pdfIn PDF document text
    • http://carneslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pejekozizolizeferisa.pdfIn PDF document text
    • http://timavoshipsupply.it/userfiles/file/19757891072.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16130588a6a761---56307821873.pdfIn PDF document text
    • http://ablerexthailand.com/userfiles/files/98984788198.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/161444bfba93c3---12694130944.pdfIn PDF document text
    • http://iberia-ex.com/images/blog/file/27545639297.pdfIn PDF document text
    • http://ieeepes-thailand.org/app/webroot/files/files/86825711543.pdfIn PDF document text
    • http://bidadapatidar.com/userfiles/file/19894407187.pdfIn PDF document text
    • http://inbeeldt.nl/userfiles/file/95732272169.pdfIn PDF document text
    • http://fusheng-vietnam.vn/admin/webroot/upload/image/files/30555428687.pdfIn PDF document text
    • http://milwaukee.center/userfiles/file/tepanaxekorekafovozima.pdfIn PDF document text
    • http://yuanhebiotech.com/upload/files/xided.pdfIn PDF document text
    • https://roshnaai.com/ckfinder/userfiles/files/webov.pdfIn PDF document text
    • http://dioceseofniranam.org/userfiles/file/74678545461.pdfIn PDF document text
    • http://rocincorporated.com/domain.com/images/dynamic_pages/file/87816413969.pdfIn PDF document text
    • http://staceyasp.com/UserFiles/file/woritux.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/44279312554.pdfIn PDF document text
    • http://castudio.eu/userfiles/files/56730231902.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=android+physical+keyboard+change+languagePDF 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_off0000d2fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eb0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0F 19328 bytes
SHA-256: 81839937a687932a7f570b32c5abe51a81c3cde145a04a8cbf6a148e0353cbbd
font_02_sfnt_off00011d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D61 11124 bytes
SHA-256: 01198319d10683da35e012ca4f072e0323d4d0e88ab604ddbd9519d53e2573fa

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