PDF malware analysis — malicious · 4d2205d67a22fc44

MALICIOUS

PDF

85.1 KB Created: 2021-09-13 04:46:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05

MD5: 89c2e77af304837144ffbfb9ec2c1941 SHA-1: 6a82257b96ada8dee437cc5759b9cd5b8bb85882 SHA-256: 4d2205d67a22fc4429b42e89593446274d7295c7df9529c769490c08ee9c8080

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links to various domains, many of which are associated with disposable hosting, suggesting a link farm or phishing lure. The presence of a 'download button' heuristic and ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates a malicious intent to trick users into downloading further malware. The ML classifier also flagged this PDF with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

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
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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://inwebjor.ru/uplcv?utm_term=3d+pdf+reader+android PDF link annotation
- http://sperrincaravans.com/images/file/gixavigitadovojeziberiwas.pdfIn PDF document text
- http://memsports.com.br/admin/libs/ckeditor/ckfinder/files/96813904208.pdfIn PDF document text
- http://www.enredmail.com/templates/files/idCliente_/file/dodigitapasosudepukok.pdfIn PDF document text
- http://www.smartlandgroup.com/ckfinder/userfiles/files/43753882013.pdfIn PDF document text
- http://piazzademarini3ge.com/userfiles/files/xuvozumaninena.pdfIn PDF document text
- http://spakimthi.com/upload/files/83350415553.pdfIn PDF document text
- http://mitroc.com/userfiles/file/73361475857.pdfIn PDF document text
- http://ledins.lv/cms/file/demixexizujekug.pdfIn PDF document text
- http://wellogo.in/userfiles/file///86747519507.pdfIn PDF document text
- https://ruedi-leuthold.com/userfiles/files/56078054500.pdfIn PDF document text
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e78f04f3fd---genuxofelisisa.pdfIn PDF document text
- https://mollis.rs/files/72365133637.pdfIn PDF document text
- http://effekt-film.de/files/file/nafibasezedulefuwepigake.pdfIn PDF document text
- http://myagreement.com/UserFiles/file/82599890852.pdfIn PDF document text
- http://bitite.lv/media/txt/122/file/92219560064.pdfIn PDF document text
- http://iscelenie.info/files/file/xadukafidamepidi.pdfIn PDF document text
- https://sintasyapi.com/img/userfiles/file/85121696150.pdfIn PDF document text
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16130c24df2b9f---dujilika.pdfIn PDF document text
- http://riccaassociati.eu/userfiles/files/nizebazadenitemabuta.pdfIn PDF document text
- http://progfin.pl/userfiles/file/dipoputuxuwo.pdfIn PDF document text
- https://bnovum.hu/downloads/gasosotebifiveturos.pdfIn PDF document text
- https://dianthusindustrial.com/resimler/files/giniwino.pdfIn PDF document text
- https://bloomland.com/sites/bloomland.com/files/razorawesajurusebowa.pdfIn PDF document text
- http://cpgny.com/userfiles/files/nabofujumuta.pdfIn PDF document text
- http://inphilong.com/upload/files/33905749258.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e896.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE896	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000100a8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x100A8	18204 bytes
SHA-256: `836c501707915ed53a01a6ca006b864aa96348fdad7e32df47583429c3f72e07`
`font_02_sfnt_off00012fc9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12FC9	10256 bytes
SHA-256: `9066fd4677f9986ea36e11b9ebc936fdb7a58a99bcae6b53ed8035abd0d773e2`

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