Malicious PDF — malware analysis report

Static analysis result for SHA-256 56ea790453630875…

MALICIOUS

PDF

80.5 KB Created: 2021-06-02 18:59:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 2e4fa2e68b477786c63156571e28329d SHA-1: c85a4155f6fb645ceb0de1473e486a919c53bda0 SHA-256: 56ea790453630875bd226a5c4cff610fcad7f0248a6a8f22d363a3f49f88d62f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to link farms hosted on disposable domains, suggesting an attempt to redirect users to malicious content. The document body, though heavily obfuscated, appears to contain metadata related to the 'Scotland Yard' game, potentially as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://cructi.ru/pbw?utm_term=how+to+play+scotland+yard+beginners+version PDF link annotation
    • https://taborufizuxedo.weebly.com/uploads/1/3/5/4/135400835/531d3.pdfIn PDF document text
    • https://wejitikokajed.weebly.com/uploads/1/3/4/6/134655746/mivuxiwukamu.pdfIn PDF document text
    • https://matekulelesij.weebly.com/uploads/1/3/4/8/134858821/1081454.pdfIn PDF document text
    • https://jeluxipofike.weebly.com/uploads/1/3/4/4/134490416/vidowiroxesak_nupapisedupoja_nikitilen_femerel.pdfIn PDF document text
    • https://xebokedobonu.weebly.com/uploads/1/3/4/7/134719403/5444006.pdfIn PDF document text
    • https://vafebukuwu.weebly.com/uploads/1/3/1/1/131163563/mopixaxurifo.pdfIn PDF document text
    • https://pedudevapo.weebly.com/uploads/1/3/4/7/134719514/47a13f0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sozakuvepar.pbworks.com/f/does_the_brain_heal_itself_after_damage.pdfIn PDF document text
    • http://wurutaw.pbworks.com/w/file/fetch/144507510/esl_past_simple_vs_past_continuous_games.pdfIn PDF document text
    • http://lomexalipele.pbworks.com/w/file/fetch/144506997/fexol.pdfIn PDF document text
    • http://noxiwako.pbworks.com/f/3978771289.pdfIn PDF document text
    • http://kibumezi.pbworks.com/w/file/fetch/144459879/xujoxopulavofazofavixubo.pdfIn PDF document text
    • http://sijomirurefi.pbworks.com/w/file/fetch/144449733/how_to_connect_my_3m_worktunes_bluetooth.pdfIn PDF document text
    • http://xovakovawup.pbworks.com/w/file/fetch/144487206/gta_san_andreas_game_download_for_windows_10_64_bit.pdfIn PDF document text
    • http://supatibu.pbworks.com/f/apache_max_log_file_size.pdfIn PDF document text
    • http://mapaduzipi.pbworks.com/w/file/fetch/144506499/pajilofusuvifoz.pdfIn PDF document text
    • http://supijexed.pbworks.com/f/jibulifukoloja.pdfIn PDF document text
    • http://zepadatoju.pbworks.com/f/grade_6_english_grammar_worksheets_with_answers.pdfIn PDF document text
    • http://xojifot.pbworks.com/f/sea_of_thieves_mobile_game_download_for_android.pdfIn PDF document text
    • http://zezimin.pbworks.com/w/file/fetch/144411726/15402790286.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE624 5596 bytes
SHA-256: a075683af9bda33b63b5a41c7ba57539e09df71677d2872805c94b8e68a992e1
font_01_sfnt_off0000f94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94C 11236 bytes
SHA-256: 0bb6a56e6d739514f90a3fc8521580e77296eb462d1c5326866c555cfb1f70f9
font_02_sfnt_off00011f33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F33 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449

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