Malicious PDF — malware analysis report

Static analysis result for SHA-256 206e45b30943a6cd…

MALICIOUS

PDF

86.3 KB Created: 2021-10-08 04:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 180e8ae824223d1c3dbabdbc32a59b81 SHA-1: 1b1d7c7f9f7e4d151f51b920d1b5835aa7bfd194 SHA-256: 206e45b30943a6cdb68e24be2c3a290224432b149bdfaf0cc9c1e7c9dcfeddba
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains numerous embedded URLs, many of which are part of a link farm on disposable hosting, indicating a phishing or redirection scheme. The PDF structure and embedded content suggest it's designed to exploit users by directing them to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 5

  • 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.
  • 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://wastran.ru/uplcv?utm_term=electricity+notes+pdf+class+10 PDF link annotation
    • https://supermovi.com/userfiles/files/fekoduwaguvodi.pdfIn PDF document text
    • http://foto-recepty.sk/images/fotky/35799719106.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/16133813b69ff8---jedibobekukiva.pdfIn PDF document text
    • http://zl369.net/userfiles/file/1043823777.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/53312251697.pdfIn PDF document text
    • http://www.chp.pl/ckfinder/userfiles/files/57137452240.pdfIn PDF document text
    • http://fibertechnique.com/tmp/file/regimorufezorip.pdfIn PDF document text
    • http://gemcom.org/userfiles/file/59204626260.pdfIn PDF document text
    • http://xn--3e0b556bhrbowi6undva.com/ckupload/files/wukiwepofabukaku.pdfIn PDF document text
    • http://anoh.net/pds/userfiles/files/fefugafurumitemugifaguto.pdfIn PDF document text
    • https://airin.lv/images/userfiles/file/35119180409.pdfIn PDF document text
    • https://kebecelectrique.com/upload/editor/file/76801940268.pdfIn PDF document text
    • http://euromarkcreations.com/new/fck_img/file/gizopolojelib.pdfIn PDF document text
    • http://consoles-a-gagner.com/fckeditor/userfiles/file/fosigisiloxi.pdfIn PDF document text
    • http://venkateshservices.com/uploads/bosoda.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614532d02010e---13614697460.pdfIn PDF document text
    • http://tieulongcopro.com/luutru/files/66127957430.pdfIn PDF document text
    • http://applecentervn.com/uploads/image/files/razafewalud.pdfIn PDF document text
    • http://chuaphucluong.com/uploads/image/files/2901819328.pdfIn PDF document text
    • https://kitapkapla.com/upload/ckfinder/files/rimumowitudiwipow.pdfIn PDF document text
    • http://benardoutlite.com/admin/fckeditor/fckdata/file/52488899233.pdfIn PDF document text
    • http://gongin.humenia.com/upload/userfiles/2021/09/files/210903102439.pdfIn PDF document text
    • http://tuanayapim.com/rsm/files/nipoke.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_off0000e69a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69A 19628 bytes
SHA-256: 021fb32b92d546c9ecc0c1b2f3dab50d4be4247434cf6fdceb08651af1caaddb
font_01_sfnt_off000119f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001320f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1320F 10884 bytes
SHA-256: fafcceefbd00b393f984072e2de8c6f7f2ccf147b277315c753902b406938c2b

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