Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e09ca5cdd5869fc…

MALICIOUS

PDF

80.5 KB Created: 2021-03-14 13:49:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: fbf6110067d652063f77bf27ae3a4719 SHA-1: f2e8c03bdc87db6b365ef9ba69537b03fc6cd1ce SHA-256: 4e09ca5cdd5869fcc2183d59a4543cf6242e4e89aa56a81266157ab0cfc4c19a
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by heuristics as an external URI and an embedded URL. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing or trojan activity. The document body, though truncated and obfuscated, contains references to 'Megaman x4 boss guide', suggesting a lure to attract users to the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/wix?keyword=megaman+x4+boss+guide PDF link annotation
    • https://cdn.sqhk.co/mevazasid/KdCjbhj/wosapakivafiferega.pdfIn PDF document text
    • http://bilkan.fun/creo_parametric_4._0_tutorial_deutschm32v3.pdfIn PDF document text
    • https://cdn.sqhk.co/vemupanilow/hd8JigM/31153455998.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/2lRhcha/elton_john_songs_youtube_your_song.pdfIn PDF document text
    • http://awpmode.com/linear_regression_model_definitionj8u4l.pdfIn PDF document text
    • http://3bki.ru/65330265198wfrb4.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/hizgjhg/world_amazing_facts.pdfIn PDF document text
    • https://cdn.sqhk.co/nujamuxeg/el7icja/bombardier_rail_merger.pdfIn PDF document text
    • http://getsol.xyz/emerson_quiet_kool_portable_air_conditioner_reviewsse08n.pdfIn PDF document text
    • http://lnstagram-badge-verification.com/hoover_windtunnel_3_air_steerable_parts90xgh.pdfIn PDF document text
    • http://topsalon.xyz/how_to_draw_a_zentangle_patternu4kkd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jivala/tipidepupibozufome.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/casteism_in_indian_politics.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/simplifying_algebraic_expressions_worksheet_answers_math_aids.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/gangster_scene_2_song_djpunjab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/424dd510-182b-4e64-958f-1d0e2e0495fc/sword_fighting_games_pc_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/tewunejeni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9ca065a-e8c2-4be5-b517-bd18d62c8cef/how_to_improve_my_english_speaking_youtube.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/fipufudonosan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8040af0-535b-46ae-9daf-4fcc07f5a1ac/jirip.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/operaciones_combinadas_con_fracciones_4o_eso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e81c070e-8e69-4f15-adf8-920ad4958390/wulemefefezapukoxez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39e238e0-bfc5-487d-a9d6-bd925b11f242/ilive_sound_bar_code_for_universal_remote.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4B 5120 bytes
SHA-256: d55aecf1a90328b61e398e7811a04527694ba274d8410e0541ae02fe44905958
font_01_sfnt_off000100a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A9 11032 bytes
SHA-256: aad7b07f08cab9d6b7895198b4d0a6ad91599c8bb605b4959fc05b5431cfb2e1
font_02_sfnt_off0001268f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1268F 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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