Malicious PDF — malware analysis report

Static analysis result for SHA-256 8127d48fcb0816f6…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 07:50:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ddb46bac2dff594698b3f95892caa9f2 SHA-1: 37ad5bcce792d488b34f7881dbfab51deefa2ddf SHA-256: 8127d48fcb0816f6bf88f95d5b2fd620ec037ce823053854cf66bece3b58685d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link and text related to 'Coin Master Hack Tool PC Download', directly linking to a URL associated with game hacks. This lure is a common tactic to trick users into downloading malware or visiting malicious sites. The ML classifier also strongly flagged this PDF as malicious.

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/406889139/coin-master-hack-tool-pc-download-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/pokemon-go-free-083_GM1094591345.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/injet-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-in-roblox-jailbreak-noclip_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/turkey-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/tricky-nicky-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-cheat-in-iphone-7-roblox-piano-tiles-2_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-no-saving-site-youtubecom_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/youtube-com-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-game-what-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-bloxburg-hack-money_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/cheat-engine-for-roblox-phabtom-forces_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-without-survey-or-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-the-roblox-birthday-system_GM431946152.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_off0000305e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x305E 22900 bytes
SHA-256: 4708221efbc80db2f2ed502542a82c83e1913f87a86489b5c20c9854c2ec908c
font_01_sfnt_off000063ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CA 18740 bytes
SHA-256: d36de94e3c573d64f59e77d3d9b2f8a40f11f17e05e75a4983c905ef81a5eb3f

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