Malicious PDF — malware analysis report

Static analysis result for SHA-256 94135ac36a8e92cd…

MALICIOUS

PDF

86.4 KB Created: 2021-07-15 16:42:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: effa744086f7a75f0a6d5db3dd4dcdd3 SHA-1: ee24bbe7dc63af859abd3a291d851d030f181f09 SHA-256: 94135ac36a8e92cd0a435c2654244360e43f199278c1f877d68d412b52a1b9db
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It functions as a link farm, directing users to numerous distinct hosts, many of which appear to be compromised WordPress sites. The embedded URLs suggest a phishing or malware distribution campaign, likely aiming to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://angkoronetour.com/userfiles/file/99028239996.pdf In PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160d79d958a7ed---48449829703.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/08bde594cd95e5fb8c2dfa9a8acca193/babiv.pdfIn PDF document text
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/c3d0b6761dfb72f1876166ec2c4a6ffb/bevutukakosajarubetimugi.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/ql8n2tvl72gceg651rrr345b60/jerilegegulaninorusakabar.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/33980419949.pdfIn PDF document text
    • https://barrierball.cl/ckfinder/userfiles/files/2925023022.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/74c3f186c9ed5c09d46b7e1629420ae0/xudikexu.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607b8793ba1ef---tafage.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/4c40e36b7a6a251e0368321700a475e3/xujugavuberoburufojewan.pdfIn PDF document text
    • http://inventory-acepipe.com/images/uploads/files/41909701349.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160923faeeeeaf---64339589207.pdfIn PDF document text
    • https://mk-sito.it/uploads/file/21161484343.pdfIn PDF document text
    • http://harrisonsfamilyreunion.com/clients/62911/File/fegofipirijigovawesedol.pdfIn PDF document text
    • http://densayhongngoai.com/uploads/userfiles/file/foninivukujoramadizefexaf.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16072d39b3e9cc---52702401638.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/a64bd59aae132b43429538ca17480e48/xulubivamosuwawagogamej.pdfIn PDF document text
    • http://archi1919.com/smlclub-files/file/wujonuzolalamuwi.pdfIn PDF document text
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16085d337e57a4---61958538487.pdfIn PDF document text
    • http://mientrungland.net/uploads/image/files/64507359983.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16085e96e79ddf---34349888116.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/ckou0l5g2lqn3asvaf337ribce/vibifokefofoni.pdfIn PDF document text
    • http://musiconthebay.org/clients/2/26/269dd5bc96e197da989a8dccc71442af/File/jokusop.pdfIn PDF document text
    • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/ua8gmnja5j9koijrns07mr44vd/58644007642.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/3087750323.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=grand+theft+auto+v+androidPDF 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_off0000ed3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED3F 10440 bytes
SHA-256: a3712692ba8d7bd4663b6a65c2258d91cf8f37aae6e44a6f73f11ac2d691885b
font_01_sfnt_off000104e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011cf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF9 17828 bytes
SHA-256: e6a0de48e5504d7dc94057355ce9c012c7e36075dce0706940633a8722cd7e16