Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a9f6b118cb46a5d…

MALICIOUS

PDF

34.9 KB Created: 2021-07-08 12:09:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6e6d74de32127ceab12df088f64428b7 SHA-1: 8f2a2eb6f3d1f0225567cd8befa6fdda79df102a SHA-256: 0a9f6b118cb46a5de695bd630c8d02deb5fca9eaf5cd7061dd90369d7b4cdbce
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency or hacks, directing users to the URL http://netcdn.tw/app/431946152/free-roblox-money-game-hack. This URL is associated with a high-severity heuristic for game hack redirects. The document body and embedded URLs strongly suggest a phishing or scam attempt to redirect users to potentially malicious content. No scripts were extracted, but the primary attack vector is the embedded link.

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-roblox-money-game-hack PDF link annotation
    • http://digilib.stie-yppi.ac.id/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/false-dbfp-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-pe_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-on-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/trickempire-xyz-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-5-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-have-free-robux-2021_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_off00002fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC9 22948 bytes
SHA-256: 2de5814c53bdccebdccbba01a875a9ed118772ae187745c880c05135173bccf3
font_01_sfnt_off0000634b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634B 19028 bytes
SHA-256: 286b45bdd8f766aa386658715904d42a258412499d5ccea6d2527f33b9debf2d

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