Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9e66272f615582…

MALICIOUS

PDF

71.7 KB Created: 2021-09-13 14:08:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: f6396fda1fc67dc911dc47c27810a76d SHA-1: b25b59e801cee980e740bed8d41d4ed71c14dce6 SHA-256: ed9e66272f615582b3c51fa85208a6c65b3b47af0198b3f3ae581efb30f3216f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on compromised or disposable domains, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://crysiq.ru/uplcv?utm_term=flight+simulator+787+advanced+mod+apk PDF link annotation
    • https://etimes.mn/uploads/files/pubazazale.pdfIn PDF document text
    • http://koala-al.com/d/files/35063103896.pdfIn PDF document text
    • https://www.groupe-coelho.fr/ckfinder/userfiles/files/nuzeg.pdfIn PDF document text
    • http://www.bongbansaigon.com/uploads/files/futujizapimudavade.pdfIn PDF document text
    • https://samsungdvmklima.com/upload/ckfinder/files/furolibezafufogaluxut.pdfIn PDF document text
    • http://aeusjtu.pretty-match.com/upload/files/16197890196.pdfIn PDF document text
    • http://pnalog.ru/images/file/morujetux.pdfIn PDF document text
    • https://staging-info.sharkovinkom.com/sharkovinkom.com/ckfinder/userfiles/files/madekepa.pdfIn PDF document text
    • https://sanmuabancongty.vn/images/content/files/20864588665.pdfIn PDF document text
    • https://ksmt.edu.np/assets/ckfinder/userfiles/files/90148733646.pdfIn PDF document text
    • http://coniperfumes.cl/js/ckfinder/userfiles/files/wetugomujizow.pdfIn PDF document text
    • https://www.weldcor.ca/public/ckfinder/userfiles/files/gutaxokejatari.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613976fcc921c---lepamekaxowawegevaguw.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613604984aa8e---88981672356.pdfIn PDF document text
    • http://www.tecnologycenter.com/admin/uploaded/fck/file/mekesewudav.pdfIn PDF document text
    • https://xaydungdonggia.com/app/webroot/files/images/pages/files/kobavuwigiv.pdfIn PDF document text
    • http://onlinetalk.jp/app/webroot/img/fckfiles/file/1821834688.pdfIn PDF document text
    • http://oletrans.sk/editor_uploads/files/fizuwizepuzo.pdfIn PDF document text
    • https://labelmarket.eu/data/file/papobesopogeve.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613f07e1ae311---fobalurilunometelosod.pdfIn PDF document text
    • http://www.saveurspoitoucharentes.com/admin/ckfinder/userfiles/files/larugamijisenawope.pdfIn PDF document text
    • http://biondiairsystem.it/userfiles/files/xedij.pdfIn PDF document text
    • http://ambvetbrashersclavoghisu.eu/userfiles/files/rokatedezexipovev.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_off0000b25c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB25C 16472 bytes
SHA-256: 6a4b6bd6bba311f8a98d01a290e98775fede21a584c0a3ed02236fe113c08145
font_01_sfnt_off0000dc0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF421 11452 bytes
SHA-256: 1a689f9ab9d71cc29d81868145e71f15966cd0a026c3045d6ff7597159ea7d90

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