Malicious PDF — malware analysis report

Static analysis result for SHA-256 0069dde18f48ed77…

MALICIOUS

PDF

76.4 KB Created: 2021-02-25 07:57:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 9ed15593dfdab1eaa9877a7ed05a87d1 SHA-1: 1e84d4770702a17044e6791929932618fe3ed6a4 SHA-256: 0069dde18f48ed77a44bcb427c3a9d1dab0406d6cb81c9e1d13297c2ea34b257
126 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, many of which point to disposable hosting and are likely used for phishing or distributing further malware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically indicates a link farm on disposable hosting, suggesting a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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://maypoin.ru/strik?utm_term=subject+and+predicate+worksheets+grade+7+pdf PDF link annotation
    • https://cdn.sqhk.co/pubabolab/1ihegia/rope_hero_frog_ninja_download.pdfIn PDF document text
    • http://hookup157.site/sketchup_free_download_full_version_2020kk2u4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377414/normal_6007efb816cc1.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/linkers_and_loaders_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xoraxuvonaf/AibGgdV/did_you_know_just_facts_about_humans.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498366/normal_5fe50f0ead901.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453907/normal_6007480028218.pdfIn PDF document text
    • http://strahuemsya.info/how_much_does_a_ford_escape_hybrid_battery_costtnsa6.pdfIn PDF document text
    • http://fofiwafajelerax.sportsontheweb.net/sotejobemog.pdfIn PDF document text
    • http://copyrightnotices-form.com/foolproof_module_9_test_answers_quizwp9xo.pdfIn PDF document text
    • http://shtangennstutkupitseychas.xyz/bsc_biochemistry_notesriq4w.pdfIn PDF document text
    • https://cdn.sqhk.co/rirerujel/cSijdge/shreya_ghoshal_songs_2019_list.pdfIn PDF document text
    • https://cdn.sqhk.co/norumuwapa/CgJcheF/pj_maskstm_hero_academy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuwutexo.onlinewebshop.net/what_are_the_strength_training_exercises.pdfIn PDF document text
    • http://lekedoxe.rf.gd/canada_pension_plan_retirement_application_form.pdfIn PDF document text
    • http://jowesokawebape.epizy.com/toguxujulanatofe.pdfIn PDF document text
    • http://tujefozumuresul.epizy.com/32524830701.pdfIn PDF document text
    • http://ribezewipuzez.epizy.com/80536127228.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off0000eb88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB88 5940 bytes
SHA-256: 2cd9f5eecf8afc11a71ab8fefbbab409bfca0b9ae6cab271163ac1e01aad9d61
font_01_sfnt_off0000ffdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFDC 10552 bytes
SHA-256: 70b72640d776d167771e4c9f67c86898135d22148bc4579441e5e22f729dcf12

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