Malicious PDF — malware analysis report

Static analysis result for SHA-256 534222f5b65734f9…

MALICIOUS

PDF

83.0 KB Created: 2021-02-22 00:40:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b32da28d483b91841f07e9492d514b63 SHA-1: 3084fb6b0c76fa76d723c168c108bdc68ea46a93 SHA-256: 534222f5b65734f9f48f5fb9eb09a536fac08eb7e77fcc7d105b41d10f3bc31f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains obfuscated text and an embedded URI that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit vulnerabilities or trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://crophysi.ru/strik?utm_term=what+can+i+write+off+for+my+home+based+business PDF link annotation
    • https://cdn.sqhk.co/mujexoxa/hduiijd/among_us_wallpaper_iphone_xr.pdfIn PDF document text
    • http://evakuator-uga.ru/fekolalosuvusojumelfxvo6.pdfIn PDF document text
    • http://yewes.fun/13440109432f0k9j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466657/normal_60287f6fbe5cf.pdfIn PDF document text
    • https://cdn.sqhk.co/rukeditele/dtjiign/xifunadobin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388824/normal_6017d017d473c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406806/normal_60290da964519.pdfIn PDF document text
    • http://medyayazilimtr.com/february_song_piano_sheet_musicyieq9.pdfIn PDF document text
    • https://cdn.sqhk.co/wenegifuteg/gggicas/king_super_saver_branson_west.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412378/normal_5ffba40f71a89.pdfIn PDF document text
    • http://mazanatur.space/spectrometer_least_countm45me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451945/normal_5fdb0ba8699ce.pdfIn PDF document text
    • http://usacarins.com/pll_algorithms_2_lookcy7jq.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/pazerogasarinu/cinta_karena_cinta_cover_della_firdatia.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/autodesk_viewer_dwf.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/wefex.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/beginner_piano_christmas_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/justice_league_animated_movies.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/99876456015.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/bagisigatozezujo.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/american_comedy_videos_free.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_off0001056e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1056E 5576 bytes
SHA-256: c5b7e713d241cac4e721bfe419c03ee60f7684a6afb64118e665b04d96b6f5d7
font_01_sfnt_off00011852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11852 11152 bytes
SHA-256: 503db2a61fb0720652f364ce9c0a9d5d96bb6ef8b59c21012036dbff8e4ae2af

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