Malicious PDF — malware analysis report

Static analysis result for SHA-256 e68efdb0c3e14aba…

MALICIOUS

PDF

83.2 KB Created: 2021-08-29 00:56:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: f60ea3f8d93e481555f5348dca63e631 SHA-1: fc9e2c0a225eb395a213e01397a4f8e2b4fe344a SHA-256: e68efdb0c3e14aba131d5780a84b702afe90284d2ae5394ca3b75c478de75fdb
156 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary function appears to be directing users to potentially malicious content or phishing sites through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://catamma.ru/uplcv?utm_term=java+complete+reference+by+herbert+schildt+pdf PDF link annotation
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3f575ad96---pemigimepufubuf.pdfIn PDF document text
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/26b3ec3f8c7dce322dfc2d10d1e2fd50/bivure.pdfIn PDF document text
    • http://emmanuelmissionarybaptist.com/clients/74938/File/42161811422.pdfIn PDF document text
    • https://blugarden.eu/file/62502891527.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/ai2dg97q8n29hqbfrk287u6dfr/62786181557.pdfIn PDF document text
    • http://brooklynsmokeshops.com/admin/images/file/90453669953.pdfIn PDF document text
    • http://tylincms.com/userfiles/files/mukawukisud.pdfIn PDF document text
    • http://bigband-ulm.de/userfiles/files/lazezudibitilozomijasi.pdfIn PDF document text
    • http://villahetzwartepaard.nl/survey/userfiles/files/goxomokazepakededipilub.pdfIn PDF document text
    • https://hnhaa.com/userfiles/tnejp/files/zowuwogijuxalelunepeka.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/7sem22i078h7k225l8o8vrnmk4/wonazovifuxubafotapeg.pdfIn PDF document text
    • https://dolnoslaskialarmsmogowy.pl/imgturysta/files/19425369525.pdfIn PDF document text
    • http://willowslakerhea.org/userimages/govovo.pdfIn PDF document text
    • https://alpinashop.bg/files/37760934126.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16092687e60436---62412386793.pdfIn PDF document text
    • http://novafish.it/userfiles/files/dokejidojawijajepovo.pdfIn PDF document text
    • http://vralumni.com/clients/7/71/71e0d721b250bdad3664bf54e70089ab/File/lavumaxomema.pdfIn PDF document text
    • https://bechtoldpaving.com/wp-content/plugins/super-forms/uploads/php/files/6f0eee23883c5d584c18ffde3409a078/29489803932.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/igr051mrom4m0osct6s2f945g7/salukupozagebelusok.pdfIn PDF document text
    • https://mednet.mk/public_html/upload/userfiles/file/zasujatoxijozuzefane.pdfIn PDF document text
    • http://altinay-law.com/images/file/lutuduroderamekavunugiz.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/2c5d5f1851abaca823d8fcd206617746/seterogebamanipo.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610aed788970b---13554186266.pdfIn 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://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_off0000dcac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAC 11196 bytes
SHA-256: 9a41f7f0c197891257d8d185ca34a06377b988500b98b06a576d76b4498c13ad
font_01_sfnt_off0000f67d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF67D 18140 bytes
SHA-256: 0b342b4ba2ee0747b6de1f3d07be789ec72340e1737b0dbf6b32900d2aab8e24
font_02_sfnt_off000125c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125C5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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