Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bfe3bf0f185896b…

MALICIOUS

PDF

80.1 KB Created: 2021-07-08 13:14:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: b7e71412cee18bf3b64f5de6a81f0e99 SHA-1: 5a11b7dacf061ebeca930f2077236fcd81c93eeb SHA-256: 4bfe3bf0f185896b72e933d0141812aaa3d007a692ddbe8e18b8c213c0c1e7db
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs that point to other websites, some of which host additional malicious PDFs. The primary purpose appears to be directing users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mldom.xyz/web/img/podborky/files/23257920131.pdf In PDF document text
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/64d7a384055d78243af8ee39a8b27968/20992423434.pdfIn PDF document text
    • https://sitpchemcieszyn.pl/_sitpchem/file/sijejifipojuvu.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090a0bd2c696---sisomepotoxoteduwaxa.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/a33790b7575472558c86b6573fb96436/26098200826.pdfIn PDF document text
    • http://copy2d.com/ftp/image/file/40376662594.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b2181c3e102---jerejuro.pdfIn PDF document text
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609924e5a3c89---mepejamarobu.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/93632100e9858086cdf6b6af23dbef11/27140972715.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/77e1cd47d8925c544e319707862b8ca5/63791493461.pdfIn PDF document text
    • http://vds-construct.pl/userfiles/file/xelosazenovevepubad.pdfIn PDF document text
    • https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/mnlv2tvcjmmd47pe89oso7abj8/93201187942.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/30073e7be465d04f1dbbb6874f499869/bipalorakemabofakod.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b06d2ce8142---muxemol.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/f96ab7295771486096b8e75bed65d105/2515846719.pdfIn PDF document text
    • https://systematix.pl/userfiles/file/talelezonirepop.pdfIn PDF document text
    • https://ensasoft.com.tr/wp-content/plugins/super-forms/uploads/php/files/1o5uvo62maan8iiel7dbrcudkd/jegemanalubaneriv.pdfIn PDF document text
    • http://t-p-fortune.com/userfiles/file/32093567738.pdfIn PDF document text
    • http://dichvuhieuchuan.com/upload/files/79683085431.pdfIn PDF document text
    • http://nieruchomosci-swidnica.pl/userfiles/file/kezugixebijinu.pdfIn PDF document text
    • https://kristinanamaste.eu/files/20245341259.pdfIn PDF document text
    • http://sugarfree-gelato.com/upload/file/62513700779.pdfIn PDF document text
    • http://vinczeandlaszlo.com/upload/pubazironupid.pdfIn PDF document text
    • http://alexhofford.com/temp/files/file/wemijon.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608064c002cc1---ruxolimezene.pdfIn PDF document text
    • http://libertyquad72.fr/userfiles/file/gugulakanikexikupe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=igbo+traditional+religionPDF 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_off0000d7f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF007 16688 bytes
SHA-256: fad53aa25ae6b04d8753e1262a0eae896bfdeee073b7acc3e7f7844acf4b2497
font_02_sfnt_off00011bcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BCF 10348 bytes
SHA-256: 9b8ffbd2cac676cc2e567f949d682ca9669aa3818fe55ea86efa2adccbc1a27e

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