Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eccb78b195d287f…

MALICIOUS

PDF

74.8 KB Created: 2021-06-14 08:10:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0abee73b630ce5d8ab49fa7a58e8e6ee SHA-1: ed3dd933f555a77bc485c219b592e7e53c023fef SHA-256: 8eccb78b195d287f10165981364992151ce35ae02e913750ce85699234bcb955
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous URLs pointing to compromised websites, suggesting it functions as a link farm to distribute malware or phishing content. The embedded URLs and the heuristic firings indicate a phishing or malware distribution campaign disguised as a game download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9829

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 https://coretry.ru/uplcv?utm_term=pokemon+let%2527s+go+pikachu+gba+game+download
    • http://agataklimowska.pl/userfiles/file/fovepijasafelog.pdf
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/ht1vk4ujr1hu826gi4519fc2nc/25430479912.pdf
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160893072ae165---fufololixenazu.pdf
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/d1t8a4akottdmd1stvum6nnu1i/romukezezim.pdf
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16079f251da4cb---sosekoguwad.pdf
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a40e7a10596---bezepomelekadodusipiso.pdf
    • http://yossy.biz/userfiles/file/82902103002.pdf
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/af3d4ae7ff9cbff6fd49b331e316fd20/mexidez.pdf
    • https://gamedunyasi.com/calisma2/files/uploads/71604649355.pdf
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5876d5feb07db3e774d50b1b4a97ecd2/zapirubobozaz.pdf
    • http://flexa.cz/docs/file/gojebokusonobuvomozater.pdf
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/b41aa3556a68ad84f0324f10d3847405/ridota.pdf
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afcc3bb8639---mabop.pdf
    • http://shethof.ch/cgi-bin/dynamisch/file/vuwepekurisiwagawigu.pdf
    • http://reicar.dk/userfiles/file/85340182378.pdf
    • http://hanhthien.net/uploads/file/tutinofadonib.pdf
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609c775007285---81784001444.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f146.bin
059196914bf6d8b28c93a2020698bc0e9f6d8d8bf685eef20f6e968b1ba15497		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF146 5720 bytes
font_01_sfnt_off000104b8.bin
969bf39bbce8e63e53b30010d78cb3f9a3151311cf9d6272a3fc51dec1d57f37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104B8 12392 bytes

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