Malicious PDF — malware analysis report

Static analysis result for SHA-256 bba07e7798c2cbc8…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 15:26:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d569fd859f593eb24b3706ecabd558e9 SHA-1: 850fdc7515c4a18b216625648310001858614d5b SHA-256: bba07e7798c2cbc89b6c033b165c0dd140a206bebd405e31b0cfd1a667f4badc
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-hack-us-game-hack PDF link annotation
    • https://sparkthis.org/ckfinder/userfiles/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/infinite-money-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/how-to-use-cheat-engine-64-on-roblox_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/roblox-the-pizzeria-rp-remastered-coins-hack_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/cheat-monnaie-roblox_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/free-2021-robux-no-human-verification-easy_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/op-rewards-robux_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/roblox-weapon-hack_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/robux-free-co_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/roblox-vehicle-simulator-free-money_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/roblox-radio-script-pastebin-hack_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_off00003205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3205 22144 bytes
SHA-256: 10a786f3ae85535023ea136475e281c0d596463fdbbdd6fbecb4c8339ea18be7
font_01_sfnt_off00006323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6323 18884 bytes
SHA-256: bfc674629a4fdfc233a3c1a19cbee54387e60bd0cdfc4a3107778b42d9fa82d8

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