Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2db5aee9fc3d0af…

MALICIOUS

PDF

85.0 KB Created: 2021-09-15 03:49:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 60693d811575cc637154d94de5b347da SHA-1: b1061477a56880636f2a04fa6bf91c563c4a3d43 SHA-256: e2db5aee9fc3d0af6d2ce1a0b255a236ccd4cf5c04d83287261bda797ace2e9d
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains numerous links, many pointing to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links strongly indicates an attempt to lure users to external, potentially harmful, sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/067ec330bb70cc49b1c6a2a44180ffda/lisotimajafokazarijifag.pdf In PDF document text
    • https://cauthinh.com/luutru/files/miluwevesuwakajukerip.pdfIn PDF document text
    • http://ketoanaca.com/uploads/image/files/radumopideviwajolixixize.pdfIn PDF document text
    • http://smirna.pl/files/file/9121622543.pdfIn PDF document text
    • http://reutlinger.pl/userfiles/file/97501189537.pdfIn PDF document text
    • https://alicantea.centralcms.cloud/galeria/files/vifinaxebizo.pdfIn PDF document text
    • https://0924055971.com/uploads/files/202109131102316415.pdfIn PDF document text
    • https://vico-immobilien.com/ckfinder/userfiles/files/giwagomipexiza.pdfIn PDF document text
    • http://tidomusica.com/uploads/files/202109061952451963.pdfIn PDF document text
    • http://nissanotogovap.com/uploads/images/files/54140660394.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/23105918377.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/161370011854d0---zibesijerunowutade.pdfIn PDF document text
    • https://doublehair.center/upload/ckfinder/files/60956028605.pdfIn PDF document text
    • http://jpsacademy.com/slbdavbatala/userfiles/file/bugowedakelirusexapum.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613879979e2f1---lopunojamotovulexanobi.pdfIn PDF document text
    • https://suksesunited.com/contents/files/pipitojizipiroruso.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/161349691f0dcf---nobewa.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/161386c3a36238---wobopeda.pdfIn PDF document text
    • https://xuanhongkhang.com/upload/files/99286456243.pdfIn PDF document text
    • https://commonlawhouse.in/userfiles/file/49897478955.pdfIn PDF document text
    • http://swissies.lt/ckfinder/userfiles/files/64247836914.pdfIn PDF document text
    • http://mtreurope.com/ckfinder/userfiles/files/57964018889.pdfIn PDF document text
    • http://chukgoobok.com/files/fckeditor/file/94258673289.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/cec3c65628efa492fd949031dc5d9a5a/11621824304.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/e463b435c4f901f36fce8f30bb59cc26/73435445104.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=note+10+lite+vs+iphone+11+pro+maxPDF 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_off0000e41f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE41F 10836 bytes
SHA-256: f514d542f55167782364acd5ef9e2b714e42fba0852c505cd1816cc6c9d6e997
font_01_sfnt_off0000fd08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD08 19088 bytes
SHA-256: da7ed7286adacc2898986af86defa61f8807a5aa279526557e551a276fff64b8
font_02_sfnt_off00012e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E79 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1