Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e78e148df9fcebf…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 08:23:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ec9ffe1496175f57d029fa32bf2bc2a2 SHA-1: 9ab545153ec9c693fc48d90c6966029d1aa9fd79 SHA-256: 6e78e148df9fcebf961a51a8da83124bbf9fa99ce070e6084788e95f5a55f8a5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a suspicious URL. This indicates a likely social engineering attack aimed at tricking users into visiting a malicious site, potentially for phishing or malware distribution. The ML classifier 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/431946152/free-robux-without-verify-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/To-export-more-data-upgrade-to-a-Guru-or-Business-subscription-plan_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/promo-code-for-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-money-hack-no-human-verification-works_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-website-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-its-free-trailer_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/unlimited-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-roblox-with-just-a-site_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-how-to-get-free-builders-club-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-know-if-a-place-uses-free-models-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-real-no-fake_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-scratch_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-matchcomfree-robux_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_off000030a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A6 22884 bytes
SHA-256: 3e9fbd0e553e3ea9b0399172dac1e9dedfc29402386f141eecf1ff32111b2512
font_01_sfnt_off0000641e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641E 19620 bytes
SHA-256: 8aa86329d0795ab1cad193d913199e82be4c5431cadd1cc96f2f7af8a2f6b0e0

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