Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3dea700fb89f7bb…

MALICIOUS

PDF

45.2 KB Created: 2021-05-11 08:10:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4bd179e9fde99c78da311e1694809e6e SHA-1: 722c3a2754d52b1ab87e64c46e614be037be9e9a SHA-256: f3dea700fb89f7bb80ab0002faf4d80495b6dd2fb1bc23ae418bfb738ce388bf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, disguised as a lure for game hacks and free currency. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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.xyz/app/406889139/how-to-get-free-chest-in-coin-master-game-hack In PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/blox-world-free-robux_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
stream_003_off00004a8b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8B 25604 bytes
SHA-256: 457b91ee5fdc33e38254aeef2bb25122f69b4a3ab42552d4ae458c0a9807b1a4
font_01_sfnt_off00008426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8426 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off00008f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F2A 18040 bytes
SHA-256: dd45839ce523a02485ada9bda8bf9a9943bac425c6d38b43d03ec8dcbfa0b602

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