Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3ee518aebb59258…

MALICIOUS

PDF

67.7 KB Created: 2021-09-16 09:11:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 9cadaf2f94bdd3fac6ef70da226f5237 SHA-1: 39d0539b65dd34261b8537b0e53b8d20d9974303 SHA-256: e3ee518aebb592589c4f5a5978f6989e684472f46d8eed2fb15e8a08080b785e
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains an image-only interface with a clickable action, typical of screenshot lures designed to redirect users to attacker-controlled URLs. The numerous embedded URLs point to compromised CMS uploads and disposable hosting, suggesting a campaign to distribute malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 67 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://coretry.ru/uplcv?utm_term=mortal+kombat+xi+torrent PDF link annotation
    • http://artbaget.net/admin/ckfinder/userfiles/files/kunuwutitefunis.pdfIn PDF document text
    • http://jpind.pl/userfiles/file/36612302353.pdfIn PDF document text
    • http://anshan56.cn/userfiles/file/16313391422045527741.pdfIn PDF document text
    • https://lacgl.org/upload/editor/file/bolotajibibetok.pdfIn PDF document text
    • http://www.masozilina.sk/ckfinder/userfiles/files/sigaveluxopuriw.pdfIn PDF document text
    • http://lorofilmes.com/Uploads/ckfinder/userfiles/files/nifujusuxav.pdfIn PDF document text
    • http://caerulumpharma.com/upload/files/gujipekefoxumomexuragoxap.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/16132ec48c26f8---zagitun.pdfIn PDF document text
    • http://akvari-um.ru/userfiles/file/jilapapegatozenizebujimad.pdfIn PDF document text
    • http://harnettcountyhba.com/userfiles/file/vogisiwaz.pdfIn PDF document text
    • https://fullmagicweekend.com/ckfinder/userfiles/files/35250927469.pdfIn PDF document text
    • http://tiramisu-o.com/yamituki-n/uploads/files/6582806489.pdfIn PDF document text
    • http://fuzoku-kyujin.jp/ckfinder/userfiles/files/nusapagopa.pdfIn PDF document text
    • https://signika.pl/Upload/file/81372190786.pdfIn PDF document text
    • http://alda.pl/ckfinder/userfiles/files/75142532350.pdfIn PDF document text
    • http://28777886.com/Lpf/UPFILE/userfiles/files/55334037387.pdfIn PDF document text
    • https://alsultantrading.ae/userfiles/files/65296635084.pdfIn PDF document text
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/2924253f67b8b82d1a17fd79b8f99c12/zegidowexufajutijipo.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/2e0157e9d90b17cfa9a33aaf58768869/sujidofuduxulegilekuku.pdfIn PDF document text
    • https://exam11.menapoint.com/app/webroot/upload/files/85884838841.pdfIn PDF document text
    • http://tavaszitura.eu/userfiles/files/47371990854.pdfIn PDF document text
    • http://kovacsoltvaskerites.hu/images/file/64317861294.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/161427e8f49571---wupunilanarejena.pdfIn PDF document text
    • http://ruben.pl/ckfinder/userfiles/files/fususa.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/161425abb60da5---denag.pdfIn PDF document text
    • 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_off0000af0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF0C 14140 bytes
SHA-256: 58ccf0dd004699bc4c4a2f72c5db950035594812d728db5544ec7028836a7692
font_01_sfnt_off0000d1d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D2 10428 bytes
SHA-256: 5cdc155d95dd9b20e7ea8c2e2f59fbc9f7ede2810e415b8c6154227cb827f836
font_02_sfnt_off0000e974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE974 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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