Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0885dad8e6792a2…

MALICIOUS

PDF

71.8 KB Created: 2021-09-25 11:45:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 1c40243392d0aa8e8203f32f6989317d SHA-1: 01edffd1d445e7bed4bf5fe14f553e7daad3a5f9 SHA-256: c0885dad8e6792a2dfc42a24c3a1f9acc6ee9f7d05e132e73804193f22d67b07
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to suspicious domains, many of which are identified as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • 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.
  • 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://queure.ru/uplcv?utm_term=focus+to+do+mod+apk PDF link annotation
    • http://haphadoor.com/upload/files/tirazazisev.pdfIn PDF document text
    • http://tsg-vaganovskoe.ru/ckfinder/userfiles/files/61426796550.pdfIn PDF document text
    • https://pergamine.com/ckfinder/userfiles/files/xofukigitif.pdfIn PDF document text
    • http://woodbridgeabw.com/uploads/files/nusad.pdfIn PDF document text
    • http://klimatyzacjaradom.pl/userfiles/file/toxizaronisugadojukega.pdfIn PDF document text
    • http://circolonauticofavignana.it/userfiles/files/sesukotawanefozirufo.pdfIn PDF document text
    • http://farmaciafici.com/userfiles/files/62099292812.pdfIn PDF document text
    • http://poornasreehomeoclinic.com/ckfinder/userfiles/files/jiniwum.pdfIn PDF document text
    • https://3eyamaichi.com/upload/ckfinder_temp/files/20210901170503.pdfIn PDF document text
    • http://handsonmontessoripk.com/userfiles/files/92040226643.pdfIn PDF document text
    • http://phutungquanghieu.com/app/webroot/files/ckfinder/files/86692135015.pdfIn PDF document text
    • https://mywayrtk.com/userfiles/file/37871033372.pdfIn PDF document text
    • http://www.tractortools.cz/ckfinder/userfiles/files/73610395498.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/kjc3r1600tm7cvs46ie5uatbk4/10554699919.pdfIn PDF document text
    • https://aparcaderoshaddaichile.cl/uploads/images/files/57698397643.pdfIn PDF document text
    • http://herningbadintra.dk/app/webroot/upload/files/51413393807.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/371fa134aac837038df73239f507cb59/47965277045.pdfIn PDF document text
    • http://bilafafafa.com/shopadmin/upload/files/10017695278.pdfIn PDF document text
    • http://aquamedia.cn/ckfinder/userfiles/files/mukijozenajutu.pdfIn PDF document text
    • http://mnwebdesign.dk/userfiles/file/3101910272.pdfIn PDF document text
    • http://sarkar.ie/userfiles/file/86967924125.pdfIn PDF document text
    • http://munnartourism.com/uploads/file/vigivilivagesurutu.pdfIn PDF document text
    • http://louisiana-arts.org.s150269.gridserver.com/siteuploads/editorimg/file/27546672210.pdfIn PDF document text
    • https://b2cdemo.tickets.com/content/files/76158369851.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_off0000b2f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2F6 10368 bytes
SHA-256: 85b47537e484121ecf44167d00f0a9d8ea228a7f1fe4088757e912e50994c556
font_01_sfnt_off0000ca7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA7E 17808 bytes
SHA-256: 1dd96f52ef874b2082e358e0a85be6ba29cb850cd94379b2c20d467e3f946aa3
font_02_sfnt_off0000f7ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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