Malicious PDF — malware analysis report

Static analysis result for SHA-256 46675d50e11d5c4d…

MALICIOUS

PDF

80.8 KB Created: 2021-09-03 21:07:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: bc77dc372c71a88636371f250acc1485 SHA-1: a9ffa3061c429c215ac99f1c1c957f8d522bdcdd SHA-256: 46675d50e11d5c4d722aefb05989f4769032efa72ebfcfea65db83ab46c96c5a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Several heuristics identified the PDF as a link farm, with many URLs pointing to compromised WordPress sites or disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs, while some are marked benign, are part of a larger pattern of directing users to potentially harmful external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce97d06f733---pidarusuzisadasozab.pdf In PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/161074a45b1018---lawugozekuresulub.pdfIn PDF document text
    • http://parkhigh65.com/clients/4970/File/najinexinukudimanut.pdfIn PDF document text
    • https://5of7edwardstreet.com/assets/media/files/27827368031.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609f97ca421d8---14028429994.pdfIn PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160849694e848f---fojojufuwagudera.pdfIn PDF document text
    • http://gloria-eurex.com/images/blog/file/74101272559.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160bd042dbd40a---tanivusano.pdfIn PDF document text
    • http://ottotech.center/userfiles/file/tuwazafovijiwo.pdfIn PDF document text
    • http://siamsnail.com/media/userfiles/files/13772079891.pdfIn PDF document text
    • https://ev-owners.jp/userfiles//files/tomefazatutofetigubizuw.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160720904051a0---gubozidopurejowunozuweniv.pdfIn PDF document text
    • http://studiotecnicobonoli.com/userfiles/files/dopalolutataxot.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160fd776feeffe---kowuvisuvudod.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/a4ba84156e23d2473d4574e45753ed5a/tanozulonigo.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160987b0abc3ee---25015319452.pdfIn PDF document text
    • http://robwalker.net/fckupload/file/xevis.pdfIn PDF document text
    • https://harkakotony.hu/UserFiles/file/tonimuvuv.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/6d5ffcea7a24616c4bc66252ff375951/12589572678.pdfIn PDF document text
    • http://1970fchs50thclassreunion.com/clients/1/19/19770213778af891f1b13fa25f964f50/File/59521289130.pdfIn PDF document text
    • http://fundacionecla.org/resources/original/file/83253746223.pdfIn PDF document text
    • http://jplus-ag.com/upload/files/BodyFile__60F74372823BE.pdfIn PDF document text
    • https://lionkingbali.com/uploads/file/7127876556.pdfIn PDF document text
    • http://birzebbugastpetersfc.com/files/file/60230691509.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=pdf+diff+tool+onlinePDF 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_off0000da86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA86 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF298 16872 bytes
SHA-256: a4544276c8125c91b9afa381cfaa149f7f0dab7bb2800a723cc382c50e3eb767
font_02_sfnt_off00011e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E50 9916 bytes
SHA-256: 3714b4588a5ca87a7c88bbc5273521fc3ec3aa7b831fcec5e906ac91173773f0

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