Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ff6b7369dfc076d…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 22:50:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4318883cb13a510c477fda8733070d45 SHA-1: 4b24922a5631575625089840e93fd5edb5309756 SHA-256: 0ff6b7369dfc076d7ae87a92459a3ebed624997ef907257578467a6bb4f0622f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs, with a primary focus on luring users to download 'free' game hacks or generators. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. The document body and extracted URLs reinforce the theme of offering free game-related downloads, which is a common pretext for distributing malware or unwanted software. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/479516143/download-minecraft-free-hiapphere-game-hack PDF link annotation
    • http://library.unissula.ac.id/fk/repository/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/without-pokemon-go-free-promo-codes_GM1094591345.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/rape-simulator_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/youtube-free-fire-tik-tok_GM835599320.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-spot-a-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-free-lua-executor-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-in-robolx_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/hack-murder-mystery-roblox-to-download-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-robux-today_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_off00003325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3325 22572 bytes
SHA-256: 4b20c2358885e63524ecf2ccbab34fcdd89cc2e79e514ac2c1f319bba19f49e6
font_01_sfnt_off0000659c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659C 18920 bytes
SHA-256: f5e6d66979b5c86b52eb520d87716e03a090c5e5ddb9498a449d0afa8dd17a93

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