Malicious PDF — malware analysis report

Static analysis result for SHA-256 05066e8e740f8b92…

MALICIOUS

PDF

58.6 KB Created: 2021-04-02 03:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbd239a158857acc021d88a00dd583b0 SHA-1: 5bc329e9fbb9463c56828a95504914ea98330034 SHA-256: 05066e8e740f8b9290eab45bdfac31fb957842f2994ea267cb110a38f52be924
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous embedded URLs, with several pointing to disposable hosting and appearing to be part of a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using such sites for malicious purposes. While no scripts were extracted, the presence of external URIs and the overall structure suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8425

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://kuzutuzo.ru/award?keyword=rudram+sanskrit+pdf
    • http://chelamela.org/50973962731gddy7.pdf
    • https://cdn-cms.f-static.net/uploads/4452376/normal_5fdc22167395d.pdf
    • http://nubolutlion.xyz/58263330941k3q5h.pdf
    • http://infonewsuk.site/demewizunikujodim4xdhw.pdf
    • https://cdn-cms.f-static.net/uploads/4460465/normal_603a7b8a61f81.pdf
    • http://retys.space/uniform_boundedness_conditiont9seu.pdf
    • http://habirovradik.ru/menamoteredi0mstm.pdf
    • http://fukazab.mywebcommunity.org/ruhs_bsc_nursing_entrance_exam_previous_year_question_papers.pdf
    • http://tryraisins.pro/how_to_drain_water_from_water_softener09tgu.pdf
    • http://titoto.xyz/31068596629gnnds.pdf
    • http://zaxiluxedexu.getenjoyment.net/jexevavusaf.pdf
    • http://pochta-24.cc/assassin_s_creed_rogue_apk_for_androidutwmr.pdf
    • https://cdn-cms.f-static.net/uploads/4456379/normal_6044f7db43d94.pdf
    • http://powerhdniy.space/rozaxarv6bz.pdf
    • https://s3.amazonaws.com/kibavutibeved/audio_technica_lp60xbt_manual.pdf
    • https://uploads.strikinglycdn.com/files/d837080e-865f-4ef0-ab51-d6d07b9ce7c4/what_is_the_meaning_of_complete_metamorphosis.pdf
    • https://s3.amazonaws.com/xufoxorog/who_pulled_the_teeth_in_sharp_objects.pdf
    • https://s3.amazonaws.com/zabejuvijolu/sutopeb.pdf
    • https://s3.amazonaws.com/nefomojuwet/alfabeto_coreano_hangul_completo.pdf
    • https://s3.amazonaws.com/wuxupewu/ajax_post_file_formdata.pdf
    • https://uploads.strikinglycdn.com/files/43e2c76a-d6c5-4826-bc37-f943c3b18d8a/zevuwutoxufofi.pdf
    • https://uploads.strikinglycdn.com/files/33bfd151-b7e5-475d-8cf0-e4810f6f9827/relative_clauses_worksheets_year_5.pdf
    • https://uploads.strikinglycdn.com/files/66f4ba37-8118-42ea-aeda-201b0b1b5a35/49188552715.pdf

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