Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f0c15eddb3c9cc7…

MALICIOUS

PDF

85.1 KB Created: 2021-08-30 13:12:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 3a146d60ae1bffa8f3c93fc9e4e9178f SHA-1: 4f86b366c533fb5e8f16fe783b1ad80825e58b49 SHA-256: 2f0c15eddb3c9cc770385e2ad3323bb6a7d15bbfd69d3a62dba71152f36a2e5a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. It contains numerous embedded URLs that point to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users to malicious or phishing sites. The presence of these links and the overall detection by security tools strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://pixomot.ru/uplcv?utm_term=eagle+point+refinery PDF link annotation
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/984b8efaf675abf726138f768a0b7bff/64491873351.pdfIn PDF document text
    • https://rsun.pro/admin/ckfinder/userfiles/files/40578759467.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a0d6f39613---jupavezorusiselipo.pdfIn PDF document text
    • https://bibliothequedesarts.ch/ckfinder/userfiles/files/71031400906.pdfIn PDF document text
    • https://www.dars.bg/ckfinder/userfiles/files/37217784084.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/ah0vdsijef65p5u5eu7ktgrbn0/wusufof.pdfIn PDF document text
    • http://adaviestransportltd.com/userfiles/file/14348817019.pdfIn PDF document text
    • https://cashcruis.ru/wp-content/plugins/super-forms/uploads/php/files/74a87183d6459fc6d17d6f8a3adbdf4b/62319485034.pdfIn PDF document text
    • http://1utilaje.ro/mm/file/pexuraxe.pdfIn PDF document text
    • https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/f57ccf4d21ddf730b3692c0e00b632b4/21076356919.pdfIn PDF document text
    • https://soportedevida.mx/ckfinder/userfiles/files/dapeniwutise.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/71959437598.pdfIn PDF document text
    • http://akinmedical.com/uploads/file/pixenakitusivaxamisovisum.pdfIn PDF document text
    • http://hnsunnyfood.com/d/files/wiron.pdfIn PDF document text
    • https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/363874cae020ae4cf95392bbcb500068/bibojogozedidutuvixu.pdfIn PDF document text
    • https://classconnbio.com/img-jacson/files/97179013302.pdfIn PDF document text
    • https://intervalhousehamilton.org/ckfinder/userfiles/files/80959231154.pdfIn PDF document text
    • http://ccsup.co.th/uploads/ckfinder/files/17467767028.pdfIn PDF document text
    • http://asupuro.com/user_data/image//file/setesesiworesu.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160731efa9bf2b---66512379120.pdfIn PDF document text
    • http://azbuka-d.ru/ckfinder/userfiles/files/53305330840.pdfIn PDF document text
    • http://lionsmarsala.it/userfiles/files/pujagugisiraziguxozudu.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_off0000e4b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fcc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC3 19284 bytes
SHA-256: 508a73355bae5f8a295c28aa1cada2d8b485abd843e929d29ac9306dde149c8b
font_02_sfnt_off00012eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EEE 10460 bytes
SHA-256: 47079c6e50e1561621965fbbed3a057298f7532d8bbf86148f8ed9c60309c93c

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