Malicious PDF — malware analysis report

Static analysis result for SHA-256 418b4895e419a282…

MALICIOUS

PDF

78.9 KB Created: 2021-06-05 13:17:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 7ce30f3022d26a80ad7c5ca2432a86a4 SHA-1: 9c0327a5bdf411fe13838c2f9fd564c11ade6896 SHA-256: 418b4895e419a282039903ad2cad222767a1cc4fb92291cb4733c3d3178f2aa6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://wastran.ru/uplcv?utm_term=how+to+reset+tv+box+mxq+pro PDF link annotation
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/o1f1fp8kvuv3jlp416kuqhog6u/58979020071.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073b28fdd429---66350882200.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160975aefded07---94502015488.pdfIn PDF document text
    • https://digidatadecolombia.com/wp-content/plugins/super-forms/uploads/php/files/9664710607c86dcb63a3f310ba783c33/94471538723.pdfIn PDF document text
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/4339d3ab5cb1b50af43607b8bdf28044/17601657279.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/88chvou7btqjoqkn4lccjet1ve/fafis.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/1ad8dbbadbf9f0183272a540ef7aeff0/60126926224.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/ff9bee47cc7ccef4a7a48a5827ce55e6/66706798281.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/d5e1fda7c87fa176be0f22eb4df48874/53763457270.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd46eb2727---13083160379.pdfIn PDF document text
    • http://angelescare.com/userfiles/file/gawilodidirip.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/n0r1na4p67lm7qveqlh9n1m5bi/zefaposapawalowiviz.pdfIn PDF document text
    • http://gopherandsquirrelcontrol.com/admin/images/file/waxajukujasefeguxirod.pdfIn PDF document text
    • http://praguetransfer.com/files/file/tigifikaguronibasov.pdfIn PDF document text
    • https://tailormade-sales-marketing.com/userfiles/file/misiwamagozatibatabu.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608409155735f---silib.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/xusarimupipenisunowewerav.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
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C8 3532 bytes
SHA-256: 07e45443728f057b45972e377728130be6b9c03fd952e15e76d9181232178c62
font_01_sfnt_off0000de6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6D 5168 bytes
SHA-256: 7e94b1ee1a5a429d65bd9e47cce91727e53e7d991c562a304bde699618750c02
font_02_sfnt_off0000f007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF007 14432 bytes
SHA-256: 6a7f0d7fb075076476475993acb7bb774af3b86cf59a3ef7912c8496e925fe14
font_03_sfnt_off00011928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11928 16100 bytes
SHA-256: 86c0d1718d2a0ca5132cbe99e3bd7b7f1cd2915ab5e6b36b451f5b067aa09cd6

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