Malicious PDF — malware analysis report

Static analysis result for SHA-256 699eb4f2fba47cec…

MALICIOUS

PDF

70.5 KB Created: 2021-06-09 21:59:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 849830d8e8454c51f926b90621c07011 SHA-1: 9e78820a68b8823f819715f4bb9ecd2c41a10c06 SHA-256: 699eb4f2fba47cec15e736311ab548341e066d0510904103072332919bf721ed
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs and is flagged as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URIs point towards a phishing lure for application downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9249

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://laborke.ru/pbw?utm_term=pubg+mod+apk+hack+download PDF link annotation
    • https://duzunadi.weebly.com/uploads/1/3/0/9/130969775/5037875.pdfIn PDF document text
    • https://bujopulima.weebly.com/uploads/1/3/3/9/133997272/7777412.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427097/normal_5ff4ce8500278.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382948/normal_6008d83e60491.pdfIn PDF document text
    • https://kukefilatisila.weebly.com/uploads/1/3/4/4/134498126/5c578cf.pdfIn PDF document text
    • https://fufagefi.weebly.com/uploads/1/3/4/6/134638184/nijibu_badabosava_wamopa_renuluvagas.pdfIn PDF document text
    • https://wuguxobexo.weebly.com/uploads/1/3/0/7/130739488/7070f2b1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414175/normal_60480fffc7112.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7457d8c7-99b4-4c14-ab40-0861338926f4/how_to_set_time_on_citizen_eco_drive_world_chronograph.pdfIn PDF document text
    • http://sejiliki.pbworks.com/f/wibatiga.pdfIn PDF document text
    • http://suniger.pbworks.com/f/frozen_fever_full_movie_download_in_tamil_isaimini.pdfIn PDF document text
    • http://dibotoge.pbworks.com/w/file/fetch/144839418/hackear_redes_wifi_sin_wps_activado_android.pdfIn PDF document text
    • http://wuranosa.pbworks.com/w/file/fetch/144702933/suxufawokuvuwi.pdfIn PDF document text
    • http://nixefijevumu.pbworks.com/w/file/fetch/144576339/sulujenikunakigupazopad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff5f209d-9c62-441c-92ee-18d36fd18b4c/hades_star_mod_apk_android_1.pdfIn PDF document text
    • http://najapenoz.pbworks.com/w/file/fetch/144652800/19182471144.pdfIn PDF document text
    • http://zipiwume.pbworks.com/w/file/fetch/144535752/79718602876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/756f4a1c-b386-4f4f-8dfc-813b3850529b/linux_system_programming_oreilly_download.pdfIn PDF document text
    • http://gapufipi.pbworks.com/f/mefofamemumogewudazafave.pdfIn PDF document text
    • http://xuzokufo.pbworks.com/w/file/fetch/144867459/pevulosuvumawewobakeji.pdfIn PDF document text
    • http://sizolasipape.pbworks.com/w/file/fetch/144578460/75564162183.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4F 5508 bytes
SHA-256: 37d19af5a390f9458826b25acc4685093cf3715ea88af69a3c810d3029b787a4
font_01_sfnt_off0000fcee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCEE 3176 bytes
SHA-256: f6df0f5cc9f54c0a0a5e7ce1d85e273b4b3f2d9233a54eb26ea9dbf8def5edf4