Malicious PDF — malware analysis report

Static analysis result for SHA-256 316f913b74b1342a…

MALICIOUS

PDF

73.2 KB Created: 2021-03-16 10:35:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbc4eef035eca14e0c7cec939c3f2162 SHA-1: 74f586c88d3ae020f10eee7cea8b01401784771e SHA-256: 316f913b74b1342ad8101ec2ed6793ce0e4b12246da77c697326f2111017794f
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely intended to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to 'Spelling bee nytimes answers'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://resalured.ru/123?utm_term=spelling+bee+nytimes+answers
    • http://dilijox.22web.org/tubawumugomurotamovete.pdf
    • https://cdn.sqhk.co/dutudovajud/jeANggE/71879030522.pdf
    • https://static.s123-cdn-static.com/uploads/4451355/normal_5fddd0c8a2ff5.pdf
    • https://cdn.sqhk.co/fodexuxefeba/aegjOVR/46121186084.pdf
    • http://mozujana.22web.org/flight_simulator_free_for_windows_7.pdf
    • https://cdn-cms.f-static.net/uploads/4447884/normal_60198fd713428.pdf
    • https://static.s123-cdn-static.com/uploads/4454046/normal_5ff75a9e8bfd0.pdf
    • http://womizepivilora.sportsontheweb.net/how_to_print_wirelessly_hp_deskjet_3755.pdf
    • http://zixivudu.getenjoyment.net/xigilunopabekisasesogixo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://watijosanowo.epizy.com/48058985312.pdf
    • http://lofowopajuror.rf.gd/37538863736.pdf
    • http://novegiw.rf.gd/aspera_phone_user_manual.pdf
    • http://bujoraz.rf.gd/higher_power_movie_parents_guide.pdf
    • http://vovajixavago.epizy.com/washington_dc_state_boundary_map.pdf
    • http://fimageparoxa.rf.gd/embolism_pulmonary_guidelines.pdf
    • http://zanulewetadom.epizy.com/walgreens_boots_alliance_annual_report_2012.pdf
    • http://lunipadudatib.rf.gd/86139039663.pdf
    • http://medojowibapij.epizy.com/sobofizilovezukufox.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e024.bin
1a94f042915ff15064dd0a4ce5db4cc1b68ff11201403a6c55af10e3a8470ec2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE024 5576 bytes
font_01_sfnt_off0000f314.bin
eb6be876e4486471786cfdeb9847b0873773b09f6b5e5336d860b969a8d8bc84		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF314 10860 bytes

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