Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9500299b2810b94…

MALICIOUS

PDF

34.9 KB Created: 2021-07-06 17:03:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cff826bd58ea16f64fec92c46c2691fd SHA-1: 744cfd2dc69b4cfe230f7cf97030bf7de99ff6d1 SHA-256: b9500299b2810b94cd3eb5f359970f23ba3ed35df10576cb2dc95646e5455216
82 Risk Score

Malware Insights

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

The PDF file contains a lure for game hacks and free software downloads, specifically mentioning 'tiktok-free-download-for-windows-10-game-hack'. This content, combined with the high-confidence ML classifier and the PDF_GAME_HACK_REDIRECT_LURE heuristic, indicates a social engineering attack. The embedded URL likely leads to a site that attempts to deliver a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.tw/app/835599320/tiktok-free-download-for-windows-10-game-hack PDF link annotation
    • https://library.sman1berau.sch.id/repository/games-like-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-followers_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hack-a-game_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-game_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-hack-money-on-muder-mystery-2-roblox_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3171 22464 bytes
SHA-256: 5564d7474b6f0bafa8f93a5bbc44cf324c0684f2b6c25f1234673de14cc46249
font_01_sfnt_off00006348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6348 19028 bytes
SHA-256: ce84e6550de31365cad9e29874c8fd9be1d9aabe75386802dec99f73610228af

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