Malicious PDF — malware analysis report

Static analysis result for SHA-256 774a22496871568a…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 10:53:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d6fcf35740d1c160b508537432ee50bd SHA-1: ef5f6086770b9c51772dc6247a816aab9adcd1ec SHA-256: 774a22496871568a6acd6ee6601da6ec1f27fccf7ac7cb5f0d7606e498e7293c
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 0.9980

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/431946152/free-robux-android-game-hack PDF link annotation
    • http://fkunismuh.org/perpustakaan//repository/tiktok-vs-free-fire_GM835599320.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-online-game_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-spins-8-14-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/what-is-bad-about-roblox-free-models_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/mistplay-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-ad_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/cheat-gg-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-cheat-engine-alternative-apoc-rising_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/alo-roblox-free-items_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-hack-anti-ban-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-spins-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_off000032a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A5 21664 bytes
SHA-256: 035d70c3164d24f6f4fa8bfd0b03bff43daacbc8ad6d4152f92bdfdd668a443a
font_01_sfnt_off00006230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6230 19012 bytes
SHA-256: 2e478fc7b9ce0e70b8625047eb87de3eba01de88a50ec98befc019c81419eab9

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