Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda51a18a7904307…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 10:22:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9eb68330987ae41969c4c1ded9621eb9 SHA-1: 2ee07c033094adefc2ddb21f1a25de65fef0ecaa SHA-256: fda51a18a7904307135e9aa94b424daecef47916da1114fafa24574f2ebfdcae
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.online/app/431946152/free-roblox-money-game-hack PDF link annotation
    • http://digilib-ppsunisma.ac.id/repository/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/www-robux-redeem_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
stream_004_off000050b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50B2 24932 bytes
SHA-256: 8bd437d52fe1865e091b245bbfdd5eba0bb7b8d870d56cb2803768c5a5e745d5
font_01_sfnt_off00008a59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A59 18324 bytes
SHA-256: 592c86f68d7cfce1f91e7ace661462f05e7807c87c96d21e42ea748452481f78

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