Malicious PDF — malware analysis report

Static analysis result for SHA-256 14b7436b30e5906d…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 08:43:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d94e232c029e6c7ac45d89362acaf63e SHA-1: 4245dfa921a2c01137cef9993ef5bb12668fdb2d SHA-256: 14b7436b30e5906d45a3a431eb77270a546a332cca456134dce580454a68c4a5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to redirector domains, including one identified as malicious infrastructure. The document body and embedded links suggest a lure for game-related cheats or hacks, likely leading to malware download or phishing. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users to 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/406889139/coin-master-free-spins-2021-hack-game-hack In PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/pubg-uc-apk_GM1330123889.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-robux-2021-august_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-games-roblox-games_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31B6 22816 bytes
SHA-256: 65f551c41ae0dc441857d05b1256e32b9d05a6d3649672355783c6049aba9bd8
font_01_sfnt_off000064cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CB 18748 bytes
SHA-256: 92aaead82d55c20f13300fdcc9721abaffa6ca8ca490d535bbad7112df5e0c31

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