Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e889a8ee5adcf1b…

MALICIOUS

PDF

71.5 KB Created: 2021-02-22 17:43:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 0eb9730a55295f45fbeabd0f575e5426 SHA-1: 4a7db19abf561a98a354dd64281d7c12367d16a6 SHA-256: 6e889a8ee5adcf1b70d5badc3de710ea213f87202820605a495bce6a1843b70e
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, contains references to 'space invaders hacked unblocked' and numerous URLs, suggesting a lure to malicious websites. The presence of external URIs and link farm heuristics indicates an attempt to redirect users to potentially harmful content.

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://bologen.ru/wix?keyword=space+invaders+hacked+unblocked PDF link annotation
    • http://midekupe.22web.org/xipidikujigarejoziwe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460243/normal_6029a9244823c.pdfIn PDF document text
    • http://gprofights.ru/why_is_half_value_layer_importantwqlk4.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/cMEgZhj/pc_shooting_games_download_free_windows_10.pdfIn PDF document text
    • http://yandex-delivery.cc/programming_language_used_for_developing_android_appsqn2h3.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/hbjfjhl/68786404730.pdfIn PDF document text
    • http://copyrightsupporthelpcenter.com/skyrock_radio_frequence_alsace61g7k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387054/normal_5fce121a8d979.pdfIn PDF document text
    • http://vidclips.design/color_by_number_worksheets_free_kindergartenyipfj.pdfIn PDF document text
    • https://nizerekudoni.weebly.com/uploads/1/3/5/3/135383630/tipupaxu.pdfIn PDF document text
    • https://cdn.sqhk.co/karopepagu/ggHjbFY/economist_intelligence_unit_country_reports_archive.pdfIn PDF document text
    • http://vuxijagodoku.22web.org/benedokomotularulavogux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376374/normal_60127bd14c0a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460057/normal_5ffe14f70b576.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://piwuzodoxomox.epizy.com/wusixaremiluvitumawutiri.pdfIn PDF document text
    • http://vatujub.rf.gd/filezilla_free_ubuntu.pdfIn PDF document text
    • http://kezaforow.epizy.com/75956060106.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_off0000d8e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E4 5528 bytes
SHA-256: b3cf5f47a116f333b2ec78d63f62319ea45f37ccac2a707e8c6021597952c9d6
font_01_sfnt_off0000eba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA2 11024 bytes
SHA-256: f2fed467fc658f48bf60b7998c96d232122fa2a6438725a55120d8d9d2ed6e1d

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