Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c4ea209c8551ac…

MALICIOUS

PDF

85.3 KB Created: 2021-09-03 13:27:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 39588bd9759b4ec0256fdcfadb412130 SHA-1: c5307c2d8401b049e8f2cb1ec00f67ffc0034793 SHA-256: 46c4ea209c8551ac461cfe4323bde6462ff57a825dc049bc081f75a47bfe4391
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are hosted on compromised websites or disposable domains, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to distribute malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://aduanaldelvalle.mx/userfiles/file/religoboge.pdf In PDF document text
    • http://yaqeen-eg.com/userfiles/file/36569157032.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16094db1392d61---22717789836.pdfIn PDF document text
    • http://cwesp.biz/upload/file/konuk.pdfIn PDF document text
    • http://rayhovietnam.vn/upload/files/jutoza.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160906af7de522---92776461694.pdfIn PDF document text
    • http://biotledlight.com/userfiles/file///vadesuxu.pdfIn PDF document text
    • http://kaies.net/upfiles/file/bumuromejagibozudemenof.pdfIn PDF document text
    • http://hotelrealerimini.it/userfiles/files/kasegegewevuvubibub.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f51657d0ae---nubor.pdfIn PDF document text
    • https://tonere.shop/app/webroot/files/userfiles/files/pugironuvim.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/641aa8e56531ab56833db90279a143e3/zezajarater.pdfIn PDF document text
    • https://atavio.ru/files/file/28236161150.pdfIn PDF document text
    • http://smartickgroup.com/userfiles/jiwibop.pdfIn PDF document text
    • http://akifkasaboglu.com/esatfisek/images_upload/files/rovesudowupojavugirefo.pdfIn PDF document text
    • http://xn--9w3b11kh5l.com/ckupload/files/77874412330.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/gaduxifarune.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f6d2a293b6d---4134491972.pdfIn PDF document text
    • http://casadiriposomarsala.it/userfiles/files/kuwilaxedigorobudigixu.pdfIn PDF document text
    • https://chezgregoire.fr/userfiles/71458415546.pdfIn PDF document text
    • https://ebooksweb.net/files/file/bogolul.pdfIn PDF document text
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/40897e804b8cc970b5b072e1af9ef8bf/53994199576.pdfIn PDF document text
    • http://mlsconsulting.net/cms/files/File/17387693073.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/d6c37220ca6a3e44527d7e13cad6e042/segazigekebubezo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=descargar+silberman+traumatologia+y+ortopedia+4ta+edicion+pdfPDF 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_off0000df15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF15 11396 bytes
SHA-256: 7db76ea0771df9a76f45f2e7633d015e5fddf0c464071416a9f572ba4dd7d9c5
font_01_sfnt_off0000f999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF999 20768 bytes
SHA-256: 6f0fca7ade7e372378475a907d26fd09a1289aae1e7d6d56560a61bf7b9d8698
font_02_sfnt_off00012ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EBC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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