Malicious PDF — malware analysis report

Static analysis result for SHA-256 748bbb1e99a6c481…

MALICIOUS

PDF

47.2 KB Created: 2021-06-04 03:57:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2def1e56c2c4f8ec7c4f9e2a54df5fc5 SHA-1: c8daa143d5c7b42259d789666d97ffbbb68832c4 SHA-256: 748bbb1e99a6c48169594990df4d106cadfd68fb7ebdab4fa892b3f4968c0796
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, masquerading as a "game hack" or "free tokens" generator. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malware or phishing attempts. No scripts were extracted, but the primary attack vector is the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 5

  • 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.
  • 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) or Microsoft license-boilerplate 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
  • 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/479516143/how-to-get-free-tokens-in-minecraft-ps4-game-hack In PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/tiktok-free-college-books_GM835599320.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-free-pants_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54F1 24388 bytes
SHA-256: 533ad23d4ced40e48df0e5f8745481141de34351c1fcac38eb5e6e32f92a9bd0
font_01_sfnt_off00008c00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C00 2824 bytes
SHA-256: 32afe7424993ed77feed76f83a3afdb3d3391dbb877b7f4b0d7509f28dd06233
font_02_sfnt_off000095a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95A6 18260 bytes
SHA-256: 6b17d904edba380b1c0a1521f110ced755ab41ddc916bfb976523684f5146024

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