Malicious PDF — malware analysis report

Static analysis result for SHA-256 72030ea8d399bcad…

MALICIOUS

PDF

85.6 KB Created: 2021-06-26 09:34:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 5c13fae1b9beee8f500df17f0db890fe SHA-1: 37d6132d65a7dd34f53bf6534ede0c37ffe5074a SHA-256: 72030ea8d399bcada26d4e59c81d3e04d1d4eff524050709f70e587ad3042617
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing or trojan distribution. It functions as a link farm, containing numerous URLs that point to external resources, likely for distributing further malicious content or conducting phishing attacks. The presence of multiple compromised CMS upload links suggests a tactic to host malicious files on seemingly legitimate but compromised websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://oniceh.ru/uplcv?utm_term=coin+master+hack+2019 PDF link annotation
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/lp3abdmak5q69op96jdheo0ll4/73246540772.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee31da4f63---91769061041.pdfIn PDF document text
    • https://www.drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b6828c11c9f---ruxolubox.pdfIn PDF document text
    • http://abnicum.com/files/file/rojobepajo.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/098cdee46c0cc5374c761e797b4985f9/53947501970.pdfIn PDF document text
    • http://vasamo.org/pds/userfiles/files/mukafuniwi.pdfIn PDF document text
    • https://condominiovillage.com/userfiles/file/kivinotowun.pdfIn PDF document text
    • http://hagelkonzept.de/userfiles/file/36582574457.pdfIn PDF document text
    • http://stardentalcare.org/userfiles/file/85026753496.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/8qfdvvqnorbj59cm830kdnh8l1/13299797126.pdfIn PDF document text
    • https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/943466e59808da92ba439bbffb653f72/86367268762.pdfIn PDF document text
    • https://paklya.su/design/img/upload/file/27290347136.pdfIn PDF document text
    • http://fandimnarodaku.cz/upload/file/zajapevexodajewifoteniful.pdfIn PDF document text
    • http://latexindia.com/userfiles/file/50360133798.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ada873f36d---pifemoboturemusewotekuvak.pdfIn PDF document text
    • http://namjapizza.com/app/webroot/files/24032959623.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16094e4aa3d507---83714738322.pdfIn PDF document text
    • https://laurallo.com/ckfinder/userfiles/files/gevopamu.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/4468063613986434ba657af16b99de4f/31151469595.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099c65d206db---nagibetigifavolaxuvepes.pdfIn PDF document text
    • https://burgas-remonti.com/userfiles/file/gunurage.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a27b987be9d---4204446295.pdfIn PDF document text
    • http://tovicetour.com/FileData/ckfinder/files/20210612_37AECEC8C5DA05E9.pdfIn PDF document text
    • http://gorisum.net/fckeditor/upload_file/file/satikawomokunusip.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_off0000e93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10155 11032 bytes
SHA-256: ed23be1191d0bd597fe5c683799b165f8073d554f1fb7ef2ad1e5a4fa86063a4
font_02_sfnt_off00011aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AEE 17324 bytes
SHA-256: e8c80dff8dd9c63223a3a1492c219bc9349d75e1b2980e196e401731a06efd35

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