Malicious PDF — malware analysis report

Static analysis result for SHA-256 9900aa272a9d0596…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 22:37:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 74e7c46ffdc9d6c5342996df409835d7 SHA-1: 03fc990ead5e92383a454c940e2604b8f5546819 SHA-256: 9900aa272a9d05966c8bb5a63fabe8c3a18c2d23c40b1443f39dd8fc953ebbbe
160 Risk Score

Malware Insights

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

The PDF document contains a clear lure for a "Coin Master Hack PC" and embeds a direct URL for download. The ML classifier strongly flagged this PDF as malicious, and the presence of an external URI further supports a malicious intent to deliver a payload. The document body and embedded URLs reinforce the theme of game hacking and cheating.

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-hack-pc-game-hack In PDF document text
    • https://library.stikeswnpalu.ac.id/repository/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-roblox-codes-2021-may_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/building-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-redeem-code-hack_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/best-game-naruto-all-form-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/is-roblox-free-on-psn_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/this-obby-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-roblox-gift-card-codes-unused-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/get-100-000-000-000-000-000-robux-for-free_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-support_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/cheat-engine-roblox-trainer_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/account-hacker-v2-0-roblox_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_off000030ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EA 22584 bytes
SHA-256: 9f8961edb01e68e6fd9ed2cf69ce4939c7728975f00d2b2464a7e32433bcf8b0
font_01_sfnt_off00006373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6373 18160 bytes
SHA-256: fd8dd7e41966129b00bd6faab6d015b3d95d63fef28ab848195abaaf238f8237

Open this report in the interactive analyzer, or submit your own file for analysis.