Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ef4c603c059748…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 13:08:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ce9b2dbd4549206d1569b8d8cfec9d31 SHA-1: d5ecbd8bdfabb289fb9f0039e1b602089a3dade1 SHA-256: 89ef4c603c059748b82071648638e76bcf83254ac0216717f0d4f08904a2561e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically designed to lure users into clicking on what appears to be a game hack generator. The document body and heuristics indicate a scam related to in-game currency or items, likely leading to credential harvesting or further malware delivery. No scripts were extracted, but the embedded URLs and the nature of the lure strongly suggest a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/grab-points-login-game-hack In PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-gift-card-roblox-giveaway-live-youtube_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-chucky-cheats_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-clothes-on-roblox-image_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-free-robux-games-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-use-free-models-on-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/wurst-hacks_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/what-is-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/robux-best_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-how-to-get-free-shirts_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_off000031c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C6 21732 bytes
SHA-256: 4b980aa3f93a5c4d165402a8beec5a9901f7c56c82517a4447162273d5979a83
font_01_sfnt_off000061ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AE 18580 bytes
SHA-256: 2c24762620d9d623288236fe8aa88065cccc78c6fb64bc2c26f1a488593870f7

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