Malicious PDF — malware analysis report

Static analysis result for SHA-256 92be79247925e1d2…

MALICIOUS

PDF

72.5 KB Created: 2021-06-27 03:13:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: c0f4d0d61819e1e9cefb9d5b62682562 SHA-1: 2d80f31efe3b4171e6647b787e0324a5fe759136 SHA-256: 92be79247925e1d2fc76902e4576c40ce2be92571fee78cf82bc129e718b7a3d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links pointing to compromised websites, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, and the document body was unreadable, but the heuristic findings are sufficient to assess the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/s4es9geujaokvrspho1m0rkgg3/86010988838.pdf In PDF document text
    • https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/4d6a3f589a67f9b803787c34785e82b0/wetafataruduretelizixo.pdfIn PDF document text
    • https://sfeerweter.nl/userfiles/files/16661304891.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/3327133957629ab03625b228c7446d6f/mugawodemukekasek.pdfIn PDF document text
    • http://soundreaming.org/wp-content/plugins/super-forms/uploads/php/files/187973d1cdc6d2f696260ad3aa55df06/66698725502.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f58b047af4---20835626123.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f5e065745---97999004361.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d1d0ba4693---79733457481.pdfIn PDF document text
    • http://zoop-tech.com/ckfinder/userfiles/files/83992666094.pdfIn PDF document text
    • http://tpdw.pl/userfiles/file/48013444516.pdfIn PDF document text
    • http://boathousebrokerage.com/userfiles/file/kepoguravesatinalixodid.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/4ea12e9e06e718efa98d2b5a725b57f5/39941197493.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/o4udgdu1p744nvujmp4h3np2h0/7534273701.pdfIn PDF document text
    • http://abnicum.com/files/file/26772600507.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c20ed901389---baredelifojifiton.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/nupaw.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c5f913787c9---71929794230.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbd1c26fa5c---jusotizadonipijakoroku.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/c52fd8d17a6377f5ecd8180f2e90c28f/kebetuged.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/22903504923.pdfIn PDF document text
    • https://anmoul.com/userfiles/file/32397246284.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=exam+questions+on+solvent+extractionPDF 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_off0000bc4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC4A 10788 bytes
SHA-256: a79f0dfe6317b5e93c29b524928e3d0997458601e88798b59fa5f8a6b33535e8
font_01_sfnt_off0000d530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD530 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ed42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED42 15464 bytes
SHA-256: a13099f09456ce716a82e3efc4c12eeb97f34205baac2f7fff919465112d551f

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