Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9dda65f7b489ff1…

MALICIOUS

PDF

77.7 KB Created: 2021-03-27 12:11:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e5e7505376e7fed9cb99519433f27124 SHA-1: 193b7d488bc82cfa88109d876a0241858b87f13d SHA-256: b9dda65f7b489ff196533c8b71043ac94173964862852baa0a1f769639f2a27e
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URI pointing to 'maypoin.ru', which is likely used to deliver a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a lure related to product information, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/strik?utm_term=kobalt+8+gallon+air+compressor+regulator+manifold PDF link annotation
    • http://vixabaj.scienceontheweb.net/zejelufewamemoj.pdfIn PDF document text
    • http://xegazinijitup.mywebcommunity.org/rogibisuleniruju.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/gegj1gg/pink_piano_tiles_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/molodomo/ijE5Wgc/rewudazuzufovivudiz.pdfIn PDF document text
    • http://rofuxipof.mywebcommunity.org/23997723009.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/how_to_reset_a_samsung_tablet_a6.pdfIn PDF document text
    • https://cdn.sqhk.co/selodiro/BijBp6k/dual_universe_nda_forums.pdfIn PDF document text
    • https://cdn.sqhk.co/guwezasov/haCOgMf/73470517232.pdfIn PDF document text
    • http://wedidizelajat.mypressonline.com/anterior_cerebral_artery_stroke.pdfIn PDF document text
    • https://cdn.sqhk.co/legusovej/icxgBjc/critical_role_character_sheets_level_1.pdfIn PDF document text
    • http://fijexojor.getenjoyment.net/woterasebibuzoxiruvisip.pdfIn PDF document text
    • http://gamuxiwami.getenjoyment.net/what_seasoning_does_taco_bell_use_on_their_fries.pdfIn PDF document text
    • https://cdn.sqhk.co/lanuniwa/Dghwjf2/beautiful_widgets_pro_v5._7._8.pdfIn PDF document text
    • https://cdn.sqhk.co/fujonexa/eqgTjdS/free_steam_game_keys_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/bejeweled_twist_pc_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/xajuzukuloza.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/83457963691.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/inglourious_basterds_movie_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/critical_analysis_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/automatismo_medular.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_off0000eea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA2 5780 bytes
SHA-256: 4a3bfd13289af0ff52c60bc504884e1a748d459f5467635af10142bb6979621f
font_01_sfnt_off0001023a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1023A 10832 bytes
SHA-256: 6742931db67501b0d2e1df83f723b7d64baa0352bf5d966186424439d4dc8c2d

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