Malicious PDF — malware analysis report

Static analysis result for SHA-256 449da97671b72fb8…

MALICIOUS

PDF

44.3 KB Created: 2021-06-08 16:32:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e362d059c488003823f455e34f1ae0a0 SHA-1: 124d036b3aee67642db362c7002bed41d51834f5 SHA-256: 449da97671b72fb888df250b940635fb461ba6579780ec0fb0d5c3d5e0aaa01c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/admin-panel-roblox-hack-game-hack PDF link annotation
    • https://lib.btkljogja.or.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-levels_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/pokemon-go-free-evolve-with-trade_GM1094591345.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/bp-to-uc-pubg_GM1330123889.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/get-me-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-promo-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/pubg-uc-midasbuy-pakistan_GM1330123889.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-pet-food-on-coin-master_GM406889139.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_off00004f83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F83 24752 bytes
SHA-256: c8f8560392df837efded4a50f01793b3e2b74aeb2a8d0ff46d2984bf9ee1cc4a
font_01_sfnt_off000088b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B5 18892 bytes
SHA-256: 186f8cc0b21959bbf230c8549cc7f51de2ff11ec630591075d0afb1394c2bed5

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