Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8d6464b3cd3995c…

MALICIOUS

PDF

33.4 KB Created: 2021-07-06 13:17:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: cb5699f712ca2be436f00e45d4bbdd66 SHA-1: 8e2b00d821de86a4ab3af868cddb89939a159dfd SHA-256: f8d6464b3cd3995cd7362288f71ee5fd02efc196b6023b17cf8ce8273c41fb0c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure is the URL http://netcdn.tw/app/479516143/minecraft-hacks-ps4-game-hack, which is flagged as a malicious redirector. The document body and embedded links suggest a social engineering tactic to trick users into downloading potentially harmful content.

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/479516143/minecraft-hacks-ps4-game-hack In PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-on-roblox-ipad-only_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/cheat-engine-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-clothes-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/arcane-legacy-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/is-it-possible-to-get-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-clone-tycoon-hacks_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-decals-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-roblox-robux-generator-no-survey-hack-tool_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/robux-gratuit-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-roblox-boombox-codes_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-cheat-engine-and-ccv5-bypass-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/do-this-for-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-hack-other-accounts-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-creepily-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-free-eminem-clothes_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_off0000300d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300D 21880 bytes
SHA-256: 0fe825b20ed91a93a34499690cd91cfd3e3558a29c1d5869542878e8813a2775
font_01_sfnt_off00006023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6023 18240 bytes
SHA-256: b4f73002f18e81855a006ce18e0825fb4920a9dbc57326b79a3de6e9c2cfa2d9

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