Malicious PDF — malware analysis report

Static analysis result for SHA-256 760f533da3fe635b…

MALICIOUS

PDF

84.0 KB Created: 2021-09-06 01:29:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 4423a4a881905546d84fc2fa52e10b2f SHA-1: 7efd864d16826cb11904e12972a253bafb8c034d SHA-256: 760f533da3fe635b985bb4cdc6fb0e615fef1cacb985401059863e7c11f75cdb
156 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. It contains numerous external links, many pointing to potentially compromised or disposable hosting, suggesting a phishing or malware distribution lure. The presence of PDF link farm indicators further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://xn--faades-mtal-n9a6a.ch/ckfinder/userfiles/files/814419065.pdf In PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/86fbe2428ce0c6b1e389eb6c27910637/labapeka.pdfIn PDF document text
    • http://tuzvedo.hu/elemek/file/jodedofogofurejezojoxedo.pdfIn PDF document text
    • http://hoaisonland.vn/upload/files/41691129906.pdfIn PDF document text
    • http://ominocoibaffi.it/userfiles/files/69959313578.pdfIn PDF document text
    • https://www.alapan.org/fckimages/file/sipebubesigijaja.pdfIn PDF document text
    • http://cnc-soustruzeni.cz/files/file/fanev.pdfIn PDF document text
    • https://ctsgroups.asia/images/file/vufaxomoxetojibewumi.pdfIn PDF document text
    • https://fokusmedia.com/images/uploads/darulijekevasosob.pdfIn PDF document text
    • https://hoangphatdanang.com/uploads/image/files/bofigamadipu.pdfIn PDF document text
    • http://koreaseals.com/ckfinder/userfiles/files/82579498222.pdfIn PDF document text
    • http://bestofbeer.ru/ckfinder/userfiles/files/titepenaxi.pdfIn PDF document text
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/ms19246kadtouoehovm838q4cn/butumevoka.pdfIn PDF document text
    • http://fitviewer.biz/files/file/lusewexef.pdfIn PDF document text
    • http://web5gstore.com/Files/files/dinuzoperawupaxa.pdfIn PDF document text
    • http://pincailight.com/zk/UploadFile/file/2021082818460473499.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/fe183431851ad20ae74c42282b7d8c98/kugurubibevatokipodeno.pdfIn PDF document text
    • https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/b2f5bb5e6e87debaed1393aeba6ed4cb/gosowarumisibalozosu.pdfIn PDF document text
    • http://ongnuocdenhat.com/upload/files/xararokadaxefa.pdfIn PDF document text
    • http://avtokapriz42.ru/userfiles/file/87602735878.pdfIn PDF document text
    • https://mut-zur-veraenderung-hambuch.de/userfiles/file/9763782977.pdfIn PDF document text
    • http://insidethedigitaltrend.biz/userfiles/file/zuvaforivapofateb.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089655b4e210---wajukilupirugomanezob.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/vuwazubuvelifuv.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085260bcbe83---65832720763.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16107e879d4134---707883361.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=oracy+skills+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_off0000e577.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE577 17448 bytes
SHA-256: 5703c6143d46c1b8d785cd21b1c898568e4ac3e85cf7afef32345b9385b97013
font_01_sfnt_off00011262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11262 10392 bytes
SHA-256: c382c61ee612bfb8ffe510e852cabd025cc2d207bd63d44f882553b1a6ec2d06
font_02_sfnt_off00012a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A11 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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