Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f1489fb2dd73bca…

MALICIOUS

PDF

87.5 KB Created: 2021-08-21 13:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: cafd9c47e16815edf885225c7e9202c9 SHA-1: c17d4b108d7ab56335e1713c70e124eecfabe6a6 SHA-256: 7f1489fb2dd73bca577094e1112db2c3c36ee0cb5df01141406f01b62833c510
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a social engineering tactic by luring the user to install a browser extension or update, a common method for credential theft or malware delivery. The ML classifier strongly indicated maliciousness, and ClamAV detected it as a phishing trojan. The document contains numerous links to potentially compromised websites, suggesting it is part of a larger phishing or malware distribution infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9883

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://laborke.ru/uplcv?utm_term=what+are+the+characteristics+of+a+media+and+information+literate+individual PDF link annotation
    • https://www.hotwaterfactory.com.au/wp-content/plugins/super-forms/uploads/php/files/5bdfed0df61009a2c9ad33d90b1c9f9d/35236892781.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a9671579bb---89786120941.pdfIn PDF document text
    • http://intrinhgia.com/admin/webroot/upload/image/files/49159477500.pdfIn PDF document text
    • http://fedime.org/imagenes/13016934723.pdfIn PDF document text
    • http://archimax.ch/dynamic-images/cms/file/81525764687.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/incu5ncb304qqdgn82cj06ij58/vigolubesezupeni.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/0k020hugej4bkounem7omnupfp/xejofexara.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c41f88800e---gapaz.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/ioj3n3dk518l3ph9m43g7u2hic/datirugapor.pdfIn PDF document text
    • http://studiotecnicobonoli.com/userfiles/files/36190697874.pdfIn PDF document text
    • http://silesiacapital.eu/data/file/42996547283.pdfIn PDF document text
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d350751619---jamonopesozosoj.pdfIn PDF document text
    • https://yodobashi-church.com/53086461383.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/55046187d2131a44fac0d96daec26cea/21638238030.pdfIn PDF document text
    • https://turkuazhost.com/calisma2/files/uploads/42247177739.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/digofasubedixosodalomori.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ed9e152e79e---mepamunesosekisezewuled.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed6e4e83fd---65670834803.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/d22029c37d7cbc7fecaf4e0eb0bf8406/11591242989.pdfIn PDF document text
    • http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072eaa61d407---31817361314.pdfIn PDF document text
    • https://condicionamentofisico.com/arquivos/file/75018534175.pdfIn PDF document text
    • http://danangsculpture.com/uploads/image/files/sozeru.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607544d397800---megobezorere.pdfIn PDF document text
    • https://santchavarabed.in/ckfinder/userfiles/files/62450670231.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/8caef7e27f99eee8cf7137bc16c9595a/8423912466.pdfIn PDF document text
    • http://mid-europe-ex.com/images/blog//file/28276743910.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_off0000f1f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A0B 16904 bytes
SHA-256: f03a2500009212c6a17d044edcd273998c342d968b15515cd63c75bde30dce1b
font_02_sfnt_off000135db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135DB 10900 bytes
SHA-256: 8e704fc94361140159f78353cb3c40e468ea1ef7246d2ac8ddbdf800bdaff03a

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