Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e46bc1c867c6bae…

MALICIOUS

PDF

76.2 KB Created: 2021-07-22 23:27:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: b063f4a50d0146ae12e47c637602034f SHA-1: e1b93f7f8b34d2390659080f875eee68206abb8c SHA-256: 9e46bc1c867c6baecb214d3f5ec05959c6b5bb7dc71ccfc92812fb669a122844
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links pointing to compromised WordPress sites and disposable hosting, indicative of a link farm used for phishing or malware distribution. ClamAV detected this file as 'Pdf.Phishing.Trojan', further supporting its malicious nature. Although no scripts were directly extracted, the structure and URL patterns suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://uforoi.com/app/webroot/uploads/files/vuvinopivifa.pdf In PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/l91msg1q9hc38du7r144p59u85/25477973177.pdfIn PDF document text
    • http://fletcherfamilyreunion.org/clients/52745/File/pevopeziburesavix.pdfIn PDF document text
    • http://hart-metale.pl/gimnazjum/userfiles/file/27011032739.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e78bc274131---90887561460.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/78349692376.pdfIn PDF document text
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/67277a8af13f9baa555650a8d6e0e7e1/17132035862.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609655de79de7---jexepexami.pdfIn PDF document text
    • http://ziconiavip.com/uploadfck/file/mubafedojarujepivokaxuvad.pdfIn PDF document text
    • http://atenngo.com/admin/sites/site/documents/dedamilemodufavofusu.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/7anjhi2c1kl8jtf9si55qhnne7/zefaradodab.pdfIn PDF document text
    • http://stihoplet.by/upload/editor/files/96016838218.pdfIn PDF document text
    • http://www.pattyn360.com/upload/forum/files/14348396928.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be3f6e624a4---bigidovizabonuvekaden.pdfIn PDF document text
    • http://www.alexgis.com/siteuploads/editorimg/file/divuwotadarilolizi.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094b347c376f---29318417942.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b34e6bdb8a---vanizilulipeg.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d9397acee4---liruwadugubaj.pdfIn PDF document text
    • http://www.alexgis.com/siteuploads/editorimg/file/16442233212.pdfIn PDF document text
    • http://www.celso.org/download/begufuvafunimo.pdfIn PDF document text
    • https://whiteelephant.co.in/wp-content/plugins/super-forms/uploads/php/files/1a527b4fd2d7b4a1a2ccc59beee16de2/geribozeju.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/30259e96a3022add48d4520d9758f152/58419749285.pdfIn PDF document text
    • https://aldurra.ly/images-editeur/img/file/17509016801.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2917561c30---wolakirotagawupolexexor.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=bengali+mp3+song+download+a+to+z+artistPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF311 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010b28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B28 11104 bytes
SHA-256: 88487537d2f4a157364b1033343c1adaf45f959d93dc6526aefd63f5697012e0