Malicious PDF — malware analysis report

Static analysis result for SHA-256 52076c7ce0eebbab…

MALICIOUS

PDF

64.3 KB Created: 2021-06-08 02:24:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ae1b5c31c43d99802d90e8281b0180ce SHA-1: ec5513e6aebbdf291db779cb86efd316fc40f8cd SHA-256: 52076c7ce0eebbab3c1d527a9e3bd9a900571e6f69f64ede500c1ca6d372ea62
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 high likelihood of malicious intent. It contains numerous URLs pointing to compromised WordPress sites, suggesting it functions as a phishing lure or a downloader for further malicious content. The presence of external URIs and link farms on disposable hosting further supports its role in malicious redirection or content delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crewmak.ru/uplcv?utm_term=letra+y+acordes+de+la+cancion+mariposa+traicionera PDF link annotation
    • https://agenciaboom.com/wp-content/plugins/super-forms/uploads/php/files/8399b8e788ttbv10hmlgg40qo4/96196533480.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/29314256236.pdfIn PDF document text
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b11d4d1ca5b---mixamipepitotujutozub.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/19dc877a2938174a3c5191ab50ede49e/fotetipijosebebuxupewum.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/553c71239c918df31c4b197dca55f4b5/rezotojofi.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/89047f280d1ea8d22139d12f755db07a/zodekixomujuwajobi.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa4839f0061---30545250724.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160809882afbaa---dosawukasup.pdfIn PDF document text
    • https://narimasu-chintai.net/jcfiles/file/68449519833.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/2in36v7kk61duvdrtmuomgbifo/37629246137.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8f3baa8290---gakajesanoporelufu.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/290bae3538d4c2ba0e87c42eba765af3/posakotefebalixuvojuvifed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBA4 5260 bytes
SHA-256: a7da6e3bcacc02bf723de69bc5cea5088174935208dc3849b82df2021a54b9c4
font_01_sfnt_off0000cd7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD7B 11308 bytes
SHA-256: 47d98baa5ac3c706da9ff8a25612f09dc6bb0e26af48bb78b44141918b5e04fb

Open this report in the interactive analyzer, or submit your own file for analysis.