Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eebada64d51203e…

MALICIOUS

PDF

86.5 KB Created: 2021-09-03 02:20:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 0e32828eb3eff274db589aaff8f4f06f SHA-1: 185ca91d1a5892c4cfc6cfbeb55a0c2deeed21d5 SHA-256: 7eebada64d51203e967a85f13a88fb640c6ca6e02b35e10c6066624aa7371008
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating it functions as a link farm pointing to compromised WordPress uploads and disposable hosting. The embedded URLs, despite one being marked benign, suggest a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and heuristics strongly suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3e97a31dc---kawepowadigubix.pdf In PDF document text
    • https://enilubricantvn.hoakhanh.vn/uploads/image/files/5524788245.pdfIn PDF document text
    • https://alley.52886.tw/uploads/files/36670017268.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f8a6d0cf6ce---40839973461.pdfIn PDF document text
    • http://www.kizkulesikizogrenciyurdu.com/public/ckfinderuploads/files/suxupitazawolowijisamato.pdfIn PDF document text
    • https://sheenabusesandcoaches.com/userfiles/file/wilowegunesalivojifepuz.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a247593a2c6---59579361984.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c43459ecf5a---58380222889.pdfIn PDF document text
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/fb9242d0e8178f079b487ed54acec81c/34161708074.pdfIn PDF document text
    • http://richwoods1969.com/clients/861079/File/75075773071.pdfIn PDF document text
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/76b2c1cfe962fa4e36df46dab677e8c5/jabekolevajix.pdfIn PDF document text
    • http://zaun-produzent.de/userfiles/file/42185712152.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/thlprqfs84aij6eta3dg5gbnvr/govogimalazobozewegoxaw.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/4669c8d246523ba5183ab7f46b8ce7fa/20154626122.pdfIn PDF document text
    • https://arrad.ch/modules/ck/ckfinder/userfiles/files/41517570055.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/92955260941.pdfIn PDF document text
    • http://cfacgroup.com/uploads/FCK_files/file/fugolivisojivarivepo.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe4b257824---62665455145.pdfIn PDF document text
    • http://wtmongolia.com/materials/file/64525964333.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160822ec364575---nuvavuna.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608557b181252---posumidababuvo.pdfIn PDF document text
    • http://ttccid.com/userfiles/files/49420135595.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=talleres+de+oraci%C3%B3n+y+vida+pdfPDF 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_off0000e5c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fdd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD2 20456 bytes
SHA-256: f0f177337c77a1c18edcfbdebc04c445bbec1da045fb674d9901ad133e83449c
font_02_sfnt_off000131a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131A1 10796 bytes
SHA-256: a1abf6165b97b3dfef6225a33927667782c791130597faa6f5438381f4944034

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