Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b7c3b35f53a481c…

MALICIOUS

PDF

46.2 KB Created: 2021-06-03 23:05:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9805835b263e0497fe663363b780a761 SHA-1: 381ae525588ad8d2bf4694bd85583d05622a98ab SHA-256: 0b7c3b35f53a481c2329c85d5d0f04c50eee8e0eb03afbfcf4d255b8a2f10ad3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that strongly suggest a lure for obtaining in-game currency or cheats for popular games like Roblox and Coin Master. The primary URL, https://netcdn.online/app/431946152/how-to-get-free-robux-on-iphone-game-hack, is directly associated with the document's content and is likely the intended destination for users seeking these illicit benefits. The ML classifier also flagged this PDF as malicious, increasing confidence in its suspicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.online/app/431946152/how-to-get-free-robux-on-iphone-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-coin-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/pubg-mobile-uc-2021_GM1330123889.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/cm-daily-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/archery-master-3d-coins-hack_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_off000050ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50AB 27636 bytes
SHA-256: b01dc3e396c5932d9b8640d465eb0950f8649a71f5cbc225385e09a420f83d2b
font_01_sfnt_off0000914f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x914F 18624 bytes
SHA-256: 22426b865d680281cc4768d4f40ba725f59186fc510e45c7c95a1e6bea128c39

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