Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2226ab94a0bc8ed…

MALICIOUS

PDF

80.5 KB Created: 2021-09-24 02:04:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 908f1ff06f1a911dd92df87323bc153b SHA-1: 6c3864cedd929d2dc2de629b23cb6a6e4932a825 SHA-256: e2226ab94a0bc8edeed3b9e164c1f1927bd7f170bc255677731c2ccfbeb0ef31
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external links, many pointing to potentially malicious domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is likely used to facilitate the redirection or obfuscate the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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 http://casaledellasignora.it/userfiles/files/xatubolasovopozujok.pdf In PDF document text
    • http://scro.ru/pic/file/ziferokovibolir.pdfIn PDF document text
    • https://rossbeede.com/userfiles/file/24601756306.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/10749822548.pdfIn PDF document text
    • https://detector-billetes.com/Imagenes/file/79196870579.pdfIn PDF document text
    • http://www.77ice.com/upload/files/fewutuvaj.pdfIn PDF document text
    • http://robertwestlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/20459598785.pdfIn PDF document text
    • http://gtlfuelmarine.com/userfiles/file/mimaribigipezum.pdfIn PDF document text
    • https://baoholaodong24.baohohoanglong.com/userfiles/file/62917541835.pdfIn PDF document text
    • https://tattica.byespresso.com/app/webroot/files/upload/files/dafogiwozabakebujulot.pdfIn PDF document text
    • https://nsstore.mx/ckeditor/ckfinder/archivossubidos/files/97039215458.pdfIn PDF document text
    • https://ddmmaze.altruistictech.org/documents/img/upload/files/92479461207.pdfIn PDF document text
    • http://www.thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/1507234652.pdfIn PDF document text
    • http://cecev.com/stockages/files/ritakefaxuxoludupizet.pdfIn PDF document text
    • https://partnermind.cz/images/files/ramogolofomefinenapuxoxed.pdfIn PDF document text
    • http://toflight.mobi/attachment/ckeditor/files/4cd3ce1271da49210af52e2bcc7a3c77.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16136bdeaab5d3---wevalasemijidevagopipidok.pdfIn PDF document text
    • http://baozhaopharm.com/upload/files/46136028874.pdfIn PDF document text
    • http://tabletopad.com/images/file/fepenubofepule.pdfIn PDF document text
    • http://dajuicebarus.com/uploads/files/64506606544.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/16140ef878da9a---bawiwolitekibenel.pdfIn PDF document text
    • http://albertf.madteam.net/ckfinder/userfiles/files/30905217252.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=galaxy+s8+qr+code+scannerPDF 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_off0000d632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD632 17480 bytes
SHA-256: cba0fd7a794dc7cc77aa8d2c4b029bca6b9018617ae9fbf86a38786e06466257
font_01_sfnt_off000103ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103EA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011c01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C01 10784 bytes
SHA-256: 8c81ebb815e3c072d30727097c0bd056fe14d0cd3b85c41d8d6752981385a9f0