Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eafc0bd9a537209…

MALICIOUS

PDF

73.6 KB Created: 2021-07-07 13:57:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 709ea4af7ac6a748e8310f0ce6e02524 SHA-1: eebc8a8680fc1fa27944e628b479371e20ed4eb6 SHA-256: 2eafc0bd9a537209541862c7e7cb5db58999c2c1c28693a98d8d57698c62b834
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains a link farm pointing to multiple compromised CMS upload locations, likely serving as a distribution point for further malicious content. The presence of numerous distinct hosts and links suggests an attempt to obscure the true destination and evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://clarklawtexas.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fododozatawavalavunifoki.pdf In PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/fc50a7bd1321302deb62656b00389cf9/lurisile.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/16096b3cae9112---42324315684.pdfIn PDF document text
    • http://seibyou-koujien.com/files/files/roxufumosariride.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/aab1edb089ef0efb050095b98702c14b/53822915040.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f631a872f4---33932337891.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/b801f3e7f59422aaaacf3c1ada9ed9ff/47320449399.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/4oo4ad4097f4vgvdku69a6vdqs/gojaw.pdfIn PDF document text
    • http://akademibt.com/resimler/files/3656328807.pdfIn PDF document text
    • http://mnwebdesign.dk/userfiles/file/89602118241.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/3d833e9b9bc1128915d30c87d289f9c7/xobufesiwepixexo.pdfIn PDF document text
    • https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/cpspk186rii0ho0iff2t4stjg7/75502251774.pdfIn PDF document text
    • http://www.themixchange.com/userfiles/files/25208501419.pdfIn PDF document text
    • https://binarbaidrealestate.com/public_html/userfiles/file/71202648862.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/67b6b11c6cf627f52c75c183cd82edae/jukifogebisi.pdfIn PDF document text
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/f6f0b4ab2f5429458934e19a3985d2f0/8231512546.pdfIn PDF document text
    • https://techson-cctv.com/upload/file/99832301689.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cf7232601d---zenite.pdfIn PDF document text
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/1e918fb36ed1f49c15e2789d3d176659/38182858186.pdfIn PDF document text
    • http://metrocars.london/survey/userfiles/files/potojavifopigimoka.pdfIn PDF document text
    • https://glycocalyx.nl/userfiles/image/file/sugosizibudezimovaw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=what+does+inspire+me+meanPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c14e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC14E 15604 bytes
SHA-256: df3f9515c95ba76494456faebb6a9d797153b7e27ff7d1bbe775dc01ff57122b
font_01_sfnt_off0000e972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE972 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10189 10604 bytes
SHA-256: 011598e9a7a1b828306924442b7e6ca94b03a58b92eb5f27b9eb0968512a3069

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