Malicious PDF — malware analysis report

Static analysis result for SHA-256 24e848f48ca7910d…

MALICIOUS

PDF

72.2 KB Created: 2021-09-05 22:07:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7e0b34842bdef02b29e0176376ff0b00 SHA-1: 0f8c6de69c3c801f67317c3f160909e1d0158b22 SHA-256: 24e848f48ca7910d7b2eabd79e22ed34354e0c4409d4e69561063d2100921821
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 http://atomiccm.com/userfiles/files/43647030357.pdf In PDF document text
    • https://residenciasanamaro.es/userfiles/files/28578569030.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/16116bd934682d---14832308607.pdfIn PDF document text
    • http://dermaktif.com/imgup/file/pilisawumitupoz.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/55980133893.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/q6d3kl6h8g41ll2094oqotvbf4/sevuvufed.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0c37ca6bb---zarininepitumefifexaja.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/fc1e3e7b664263992ac83bfd5eb18353/79541750150.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16096c5ff2d644---tobikolox.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160746d18216c4---xowukexexowupurepuzemanu.pdfIn PDF document text
    • http://moje-stranky.eu/userfiles/file/13206653528.pdfIn PDF document text
    • http://klubbelgickychobrov.sk/editor_uploads/files/27726340289.pdfIn PDF document text
    • http://baruraprotidin.com/assets/ckfinder/core/connector/php/uploads/files/95447515307.pdfIn PDF document text
    • http://sochi-polyana.com/ckfinder/userfiles/files/xodubef.pdfIn PDF document text
    • http://shippingengineering.com/files/ckeditorothers/97797181093.pdfIn PDF document text
    • http://alhs1973.com/clients/64426/File/xisasilajamimifo.pdfIn PDF document text
    • http://assistance.uz/images/shared/file/zajasesowan.pdfIn PDF document text
    • http://www.zywawiara.pl/pliki/ditapakirazuwisofe.pdfIn PDF document text
    • http://hungbuloon.com/media/ftp/file/12027515975.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071cec9d3264---65163799087.pdfIn PDF document text
    • http://schubert-hh.de/image/file/13281468550.pdfIn PDF document text
    • https://cplastik.cz/data/cms/file/57747977775.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=osteomyelitis+pdf+adalahPDF 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_off0000ba2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA2E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD240 15988 bytes
SHA-256: c3f55a9f97fe7f96c30bcc6d18a59ef445a7a544154499958f6f2851b0e8b37d
font_02_sfnt_off0000fade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFADE 10700 bytes
SHA-256: 4633a997369d31decf11ddedf3c64beb97999f111d017ae1258e8029f429edc0

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