Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2ea710592f02b18…

MALICIOUS

PDF

34.0 KB Created: 2021-07-07 18:21:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: af8ea7f405e8facd503b80affd2548ef SHA-1: c95dc157af5bb0d5fed85c2fc375bb3fc0b51ec1 SHA-256: c2ea710592f02b18040cda718cb8fed592467e41c7f58d0d3e04f40215fe919a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs and a high-confidence heuristic firing for a game hack lure. The primary URL, http://netcdn.tw/app/431946152/roblox40com-robux-game-hack, suggests a malicious redirector or download page. The document body, though partially corrupted, contains references to game hacks and cheats, reinforcing the lure. No scripts were extracted, but the presence of embedded URLs and the nature of the lure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/roblox40com-robux-game-hack PDF link annotation
    • http://digilib.uim.ac.id/repository/roblox-free-followers_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-roblox-rewards_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-bacon-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/hack-roblox-steven-s_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/pokemon-go-free-joystick-android_GM1094591345.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/mcpe-client_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-hack-coin-master-with-root_GM406889139.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_off00002e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2B 22204 bytes
SHA-256: 46af3264b06bd112d7e33ca273d9197a737749c7ce1f2cdb0ec79178ddbafff9
font_01_sfnt_off00005f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9A 19120 bytes
SHA-256: 1da81d55382e1c31fd4c6d9ed48754b7b1fca039527ac4466b5c20815f286d1d

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