Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ce1490bd116ec84…

MALICIOUS

PDF

74.4 KB Created: 2021-09-08 02:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 852526488bb1b8a47359dead73a30b75 SHA-1: 566c0c3671a94e031a00e580db5e19df7418c2e6 SHA-256: 6ce1490bd116ec84498ecb275cfa088e5f289cd4338bf82a3c19835505b022fc
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and a high ML score. It contains numerous links pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users. The presence of these links indicates an attempt to direct users to malicious sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/c2n854egn6u6hoe4fi36i3bkq1/23860178541.pdf In PDF document text
    • http://hoctienganh123.net/upload/files/kenibepipupovaguwakuvemi.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608146bbbc6c7---11887677733.pdfIn PDF document text
    • http://firegallery.ru/img/upload/52573808052.pdfIn PDF document text
    • http://tragadsonisurat.com/ckfinder/userfiles/files/31770567589.pdfIn PDF document text
    • http://standardamulet.com/files/files/xekezuxuwazatumigawujasa.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/tfabbe45mqhj8qshgfc6n5l0b2/runupagomenal.pdfIn PDF document text
    • http://blpest.com/UserFiles/file/mobitirogimomu.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/wofotajapigu.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160bb6324dc719---tiweju.pdfIn PDF document text
    • http://debandhelder.nl/ckfinder/userfiles/files/wuwazokokekogafexejado.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b37337219c4---63436536730.pdfIn PDF document text
    • http://dongsimkindergarten.com/upload/files/burewuxedibixin.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16126e452260fc---kerew.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1609cffeecc442---bogagafezixalerozizulojof.pdfIn PDF document text
    • http://jakpaisanestate.com/images/upload/files/wejudikilobebaxetejoman.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160828934abea5---1997416706.pdfIn PDF document text
    • http://eksternest.be/images/file/xadev.pdfIn PDF document text
    • http://freeski.hu/freeski/file/98724341296.pdfIn PDF document text
    • http://pusancard.com/userData/board/file/74434722432.pdfIn PDF document text
    • https://majorsagilekvaros.hu/uploads/file/29375525163.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ab95940817---98885072427.pdfIn PDF document text
    • http://birdwatching.sk/media/file/14604933397.pdfIn PDF document text
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5987883919---nupowesew.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=black+orpheus+piano+sheet+music+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_off0000be2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE2C 17116 bytes
SHA-256: 48c44fa2ea948d009bb14d441c0b96bfaaf495d066db191594f4c7be217bde1f
font_01_sfnt_off0000ea08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA08 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001021f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021F 11132 bytes
SHA-256: 5b87a46fdaaad312502434d06a2bfd9e21675771fea1d90df9acc572d9fa7246

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