Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe821d70caffeb79…

MALICIOUS

PDF

259.7 KB Created: 2021-06-27 21:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7d8ec2c8ca4f4936285c4386724d5a35 SHA-1: ea2ec01da0713fbb07379ead99d1467e192213c2 SHA-256: fe821d70caffeb7901e2dd7718feeb2d8054f7f4c055da2d3bca4e763b687e3d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF containing numerous links, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of external URIs and compromised CMS upload links suggests the document is designed to redirect users to malicious infrastructure, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9921

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.
  • 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://transport-vehicules.fr/userfiles/file/saxikabolodumidudep.pdf
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/cad82582d29373304f6fd170795aff4c/xalusafaj.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/181966l0iga399fm4pkmjc9220/lanex.pdf
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/20d8a3cd474e4b03110feb97252162d7/zudenijigivubabosabaro.pdf
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609627b5c802a---xabarapapiwimudobuzojebax.pdf
    • https://noticky.net/akce/fotky/file/kunubaw.pdf
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1853e7b246---40700829364.pdf
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e5e2b7c7f6---72837663790.pdf
    • http://rmgoals.com/userfiles/files/nolanomopezaxuditeros.pdf
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/8656698cf2e1010a9b5701683a2fa5a5/72189357005.pdf
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/46497edfa8f7685358f7c600f695717a/jidinev.pdf
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/58ecd5c977481cb108f4ba72e39430be/95452316472.pdf
    • https://tl-systems.hu/files/files/57797487192.pdf
    • https://spheresignal.com/app/webroot/userfiles/files/51405065125.pdf
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606edc416c89b---kujojowuweg.pdf
    • http://ciskmv.com/css/file/fixulewejifazafan.pdf
    • http://bhk-aindling.de/userfiles/files/39943106335.pdf
    • http://quick-thailand.com/images/uploads/file/xizoxivuwulenepokog.pdf
    • http://anma.pl/anma_edytor/file/70679488321.pdf
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160ccef8aa5a32---pifagajipafidesefifok.pdf
    • http://tkhomedeco.com/assets/uploads/ckedit/files/20210618145258.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=independence+meaning+in+bengali
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003992b.bin
25c7e671d055c1e1a91620dfcc404dd619ca52131283ed73ae754bdb92bb9601		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3992B 10464 bytes
font_01_sfnt_off0003b055.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B055 16792 bytes
font_02_sfnt_off0003c867.bin
bb608fb533a63493b056972fbc8d757c96f82916d6e0b2ef6b809841f2938186		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3C867 21804 bytes

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