Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee61c9ff88f5c774…

MALICIOUS

PDF

82.1 KB Created: 2021-03-20 12:33:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 111bf2713686564de5af29fd1681a2cd SHA-1: 443cc215b896da9ff5648865f493a9527073b392 SHA-256: ee61c9ff88f5c774581f2e5e08975a2026987d4d0651c55ffcf8325a5f8bd492
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that directs users to a malicious site. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. The presence of multiple unknown reputation URLs suggests a campaign distributing malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/award?keyword=asian+games+2020+winners+list+pdf+download
    • http://xufelaketodo.getenjoyment.net/primary_auxiliary_verbs.pdf
    • https://static.s123-cdn-static.com/uploads/4494657/normal_5ff247f2c55ce.pdf
    • http://lovemecompletely.com/jordan_belfort_book_way_of_the_wolfw7qy5.pdf
    • http://kimokabif.medianewsonline.com/eenadu_epaper_today_download_free.pdf
    • http://wusokamojifel.scienceontheweb.net/121253895.pdf
    • http://vowewudimo.mypressonline.com/10133285742.pdf
    • http://artrosil.xyz/how_to_set_up_diggro_id115_smart_braceletk8hys.pdf
    • http://namabal.scienceontheweb.net/38451219743.pdf
    • http://posadukik.getenjoyment.net/54587273896.pdf
    • http://gipogup.sportsontheweb.net/xoxokizezikawetumabavabux.pdf
    • http://winfreeiphone.xyz/25313174197qyqgd.pdf
    • http://silkhfig.bid/tumblr_themes_free_codes5g61v.pdf
    • https://static.s123-cdn-static.com/uploads/4370767/normal_60010dc0e4091.pdf
    • http://legendbilisim.com/can_you_really_manifest_a_specific_personyf29i.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://5bf49506-6ef1-42f8-8f90-7e3689255fd3.filesusr.com/ugd/8fe1bf_2461efe497834d0baaecba865c296007.pdf?index=true
    • https://08202b68-adf4-4b7d-bb06-fcebe54c78b8.filesusr.com/ugd/76dd3d_6765db0ba61d4dd7b67c9a9b7f55ad59.pdf?index=true
    • https://s3.amazonaws.com/najubu/mkv_video_player_for_windows_8.pdf
    • https://93641f3c-03d3-4c8c-b6db-0fd9bfabe798.filesusr.com/ugd/384ca7_0a9ee2a67e96469fbac1bb28481b2eb0.pdf?index=true
    • https://s3.amazonaws.com/minabiwa/how_to_break_macadamia_seed_dormancy.pdf
    • https://8b7199fc-a029-4910-8138-caee300d1cbd.filesusr.com/ugd/da8f68_2f41e7815cd14938b62613f192008b45.pdf?index=true
    • https://s3.amazonaws.com/fevobelijogal/west_des_moines_infinite_campus.pdf
    • https://s3.amazonaws.com/wozoxub/glassy_sky_piano_sheet.pdf
    • https://7fad2989-91b8-457c-89bc-9a0e7aeef19f.filesusr.com/ugd/b03ff3_425c6fc1c23c4583bd7bcd3633c07782.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010262.bin
8ac8cef565cbe5c6d818d10044bbcc2bc86b0ca67c569852b9ecc0db92f6b244		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10262 5716 bytes
font_01_sfnt_off000115d4.bin
25b99ecfac8f9bf39677c6c51af7813155138cd5b8791017a886193c76ba1142		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115D4 10880 bytes

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