Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff305633561937ae…

MALICIOUS

PDF

46.7 KB Created: 2021-06-03 04:22:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d1125ade965267391e209d04f54c5628 SHA-1: 172b028c155d9267eed30be4e723a71a1db94d83 SHA-256: ff305633561937ae29e43f93d8d5e86735b926c787239fda7e9f0c1efb99cf87
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 0.9832

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.online/app/1330123889/pubg-uc-free-in-pakistan-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info/repository/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-spin-coin-master-new-link_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
stream_004_off00004ba0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BA0 32716 bytes
SHA-256: 0956488b832b9715bbcc6ea6e79782ff9441ebfd2b0a8b421da2ba8a88b5dec4
font_01_sfnt_off000092e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92E5 18684 bytes
SHA-256: 2a5d130b8b2d7c4c66f93f36a6b007a967c8259578000f3f0c95b5d938f88607

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