Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e6e1c80dc780ad…

MALICIOUS

PDF

84.0 KB Created: 2021-09-11 22:14:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 0c3b77f2d01d523da11f68b5427e82d7 SHA-1: 362687de94306fa891d68f2729e058344e2f1066 SHA-256: f2e6e1c80dc780ad4c96e5ee0a9073e369ce0c7c4626fbe4b98e512be8f09f96
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and is identified as a link farm, with many URLs pointing to potentially compromised or disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution by redirecting users to external sites. The presence of embedded JavaScript suggests an attempt to execute malicious code within the PDF viewer.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://allmedicus.com/userfiles/file/24416807580.pdf In PDF document text
    • http://nhakhoasaigonkimcuong.com/uploads/images/files/rufal.pdfIn PDF document text
    • http://abwnickersonplaza.com/uploads/files/pemetikijexifoloj.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16137d88b06599---soxikawevazojetovo.pdfIn PDF document text
    • https://ichapps.peaceofworld.com/ichapps/ckeditor-ckfinder-integration/uploads/files/faxizufawesevuzoripepa.pdfIn PDF document text
    • http://oreade-breche.fr/userfiles/file/8565914335.pdfIn PDF document text
    • http://www.nomorcantikjoss.com/file/2788056382.pdfIn PDF document text
    • http://mesterteto.hu/userfiles/file/19609405811.pdfIn PDF document text
    • http://islandpointfl.com/userimages/luxitimeno.pdfIn PDF document text
    • http://cardealer-space.com/js/upload/files/14658731777.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bb424f048e---zewiguparonixikafubepaxe.pdfIn PDF document text
    • https://satuldelut.ro/ckfinder/userfiles/files/kuxijoxejaxezinidejasava.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/58733988e46ecf569dafa5d55093705d/55313195042.pdfIn PDF document text
    • https://nvsrolko.org/ckfinder/userfiles/files/jilakubirepigajudomoti.pdfIn PDF document text
    • https://ip-kamera-rendszer.nuttydog.hu/ckfinder/userfiles/files/78763444170.pdfIn PDF document text
    • http://buyyoutubecomments.com/ci/userfiles/files/mubepede.pdfIn PDF document text
    • https://www.aukuras.org/ckfinder/userfiles/files/xixil.pdfIn PDF document text
    • http://thebeautyofdesign.nl/ckfinder/userfiles/files/basisevagozakodorudeduz.pdfIn PDF document text
    • http://chi-kara.net/Upload/files/22125730850.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161329345eab61---wagufazuxilasugazub.pdfIn PDF document text
    • http://lrm.mcdonalds.ua/ckfinder/userfiles/files/gezosukimi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=friends+season+1+free+streamingPDF 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_off0000e16f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16F 10680 bytes
SHA-256: 4e5436266b9a66dd61cddf349acf597eb25ca810cf4042c63e14c51b06b2cc6b
font_01_sfnt_off0000f9b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B6 18756 bytes
SHA-256: 2fe058cc59b91cbdcd79af942032f26981659ff223dba2bae4ed172e583aa515
font_02_sfnt_off00012b07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B07 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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