Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ece7904fc2a7fef…

MALICIOUS

PDF

78.7 KB Created: 2021-06-11 19:51:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 2186c36ee89294e3e93aedee8485f66c SHA-1: abc3f1d8716dc582b2f1d9fc34981c4a464781bc SHA-256: 0ece7904fc2a7fef9c1bf155841a57ee10c363dae28626e7ced9356322a55ec9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous embedded URLs that form a link farm, directing users to compromised WordPress sites and other potentially malicious domains. The presence of these links suggests an attempt to redirect users to phishing pages or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://coretry.ru/uplcv?utm_term=single+phase+forward+reverse+power+circuit PDF link annotation
    • https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/7250485016362d606e16978228fe01e1/baxobolagodobelezexevano.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/suminukesuxusumojode.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b6481fa5d18---11755044995.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/a4a10bbe0a1165b0d9f8f40aa531ce29/40558797218.pdfIn PDF document text
    • http://tumwebthailand.com/ckfinder/userfiles/files/vofipodazirilafulojawugo.pdfIn PDF document text
    • https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/ef9dce01b13b2dfba654fb77bc1ccfe8/86957250496.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/67f429cb96f4b42f5b3597720a5053f8/85315300331.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/7049c847005e1542dc0bae1f2375eb50/mopulevumiz.pdfIn PDF document text
    • https://tedvandergulik.nl/userimages/file/nobowofasukiwaze.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/dcaa594474eb4f1540c10474f6fbaac6/takik.pdfIn PDF document text
    • http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/vuwupatoxotivajefaloxok.pdfIn PDF document text
    • https://zlatartopalovic.rs//files/xamamarawigupuvenez.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a576e68b4b9---53174402939.pdfIn PDF document text
    • https://floraplant.gr/FCKeditor/userimages/file/72770994579.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16081096d6128b---7330261214.pdfIn PDF document text
    • http://donateagift.eu/userfiles/file/suxebizaseluganoliguwogo.pdfIn PDF document text
    • https://chris-arnold.com/userfiles/file/46055559865.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/6ddee33c598cf201a1dca39a03129608/xewifunowugabapajezusadu.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160865b96d8afd---45933535326.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A6 5552 bytes
SHA-256: 98b07116b603b1a80d669b6b6cd3d16c088b32c8c9ebc9d2b054dc2985f4b96e
font_01_sfnt_off0000fa8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8F 10584 bytes
SHA-256: cf93c0c41dcf1f978a1aa2bae81136c5dda43c9bd0c5e81b0f91b40f0aa6c0c1
font_02_sfnt_off00011ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EDE 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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