Malicious PDF — malware analysis report

Static analysis result for SHA-256 425c6e2c6ccc882b…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 00:37:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 967018921769cb25f3ca496c1d5a7e75 SHA-1: 5be47df3a7ae8957918305821c824cb2c7d79db8 SHA-256: 425c6e2c6ccc882b3d8a50e6b6203a55da8df2b40be0210dcaf53883a3f210e2
220 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/free-robux-thumbnail-game-hack In PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/hack-prison-miner-roblox_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/hacking-simulator-mobile-update-codes-roblox_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-items-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/is-free-followers-on-tiktok-free_GM835599320.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/www-roblox-com-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-know-if-you-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-free-spin-bonus_GM406889139.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_off00003271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3271 22668 bytes
SHA-256: 7703904a3bb58d9ed20db772db663dc844af4b835c926211c01fc109acb62dbb
font_01_sfnt_off0000653b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653B 19336 bytes
SHA-256: adbfa614176d12f8fda67e6e8d5b73dbc28431768a4cac05a3d314a7f167f1c3

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