Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd378bb3409e654…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 21:45:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-26
MD5: 75c30cfeab6142b4b9774c42cf9afab0 SHA-1: faa1a6fdf5da4b256a7c129463132d2a0ace5497 SHA-256: 3dd378bb3409e6547a5b33f32112a460b2ed0cec33d64ef1fe2c594c25effff4
160 Risk Score

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/406889139/coin-master-heaven-links-free-spins-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-make-a-shirt-hack-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-modded-roblox-games_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-roblox-limiteds_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/freespins-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-hack-btool_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/earn-free-robux_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
stream_002_off00003178.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3178 23224 bytes
SHA-256: bdd42b95fc732a6d6e86e70ddbd5a05e54073a74eb73c31e93ae427f0336bf7a
font_01_sfnt_off000065d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D2 18460 bytes
SHA-256: 7f2262db6ab76bc1f6105e798ed7c50fa72da46386f32024f49953bbee5214b2