Malicious PDF — malware analysis report

Static analysis result for SHA-256 f448a87eaeae058b…

MALICIOUS

PDF

44.3 KB Created: 2021-02-27 09:10:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: cd48a3be28751fcd83e9edbf19a04243 SHA-1: 94a30533770a4c5b9d2c94254e8100d481d4a58c SHA-256: f448a87eaeae058b1b658e2508e166a3af850e991dad589fd88d46d7c90f4ace
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs pointing to suspicious domains, including one identified as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8203

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/award?keyword=thinking+mathematically+%2528mymathlab+access+card%2529+edition+7th PDF link annotation
    • http://itfamily.pro/xujaxitukefq9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379971/normal_5feba3c9ec1d2.pdfIn PDF document text
    • http://guitar.su/90005393007bfcpy.pdfIn PDF document text
    • https://cdn.sqhk.co/nenuguvan/f09bijb/ps4_remote_play_app_won_t_connect.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/2gcjjY4/voicemap_audio_tours.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482860/normal_60109c7e44af3.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/lista_de_verbos_regulares_e_irregulares_en_ingles_y_espaol_conjugados.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450160/normal_60261dcc5f1e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373509/normal_60152d2a11632.pdfIn PDF document text
    • http://wejuzofibab.medianewsonline.com/51269216640.pdfIn PDF document text
    • http://nuveclovet.xyz/turning_16_advantagesrk9ty.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413983/normal_5fdd0c9f81f57.pdfIn PDF document text
    • https://cdn.sqhk.co/jigekuragige/PVUKiiA/class_9th_cbse_social_science_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_603007fd09871.pdfIn PDF document text
    • http://eurosett.net/bejusuu2zxp.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/pufixozatopulat.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/tiffany_blue_ar-15_lower_parts_kit.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/sonicwall_tz_105_installation_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/kazuso.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/southwest_airlines_gate_information.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/bujatotidimotawiwurabun.pdfIn PDF document text

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