Malicious PDF — malware analysis report

Static analysis result for SHA-256 3af3c25dc8529bfb…

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 03:42:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1544a0a36069d1c657171b97a19cf401 SHA-1: f3aabb009eb312c572f8899f24d18e7792811fc4 SHA-256: 3af3c25dc8529bfb431f6a59096c153b020c51b4f9b8d04dfd6dbee7c71e8dae
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.co/app/431946152/free-gun-exploit-roblox-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info/repository/without-tiktok-free-followers_GM835599320.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-fre-video_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/pokemon-go-free-on-pc_GM1094591345.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/dll-for-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-pc-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/jojo-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/wurst-18_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/daily-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-link-download-ios_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_off000030ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AD 22216 bytes
SHA-256: 907048b27cb2c51663246d579308ee1f74e7e140c602c564e96faf19c4d82036
font_01_sfnt_off00006232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6232 19192 bytes
SHA-256: 0a5a1811f53116dc2f34b61f2c007edd716e578cb990fa67291047ebb2c38054

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