Malicious PDF — malware analysis report

Static analysis result for SHA-256 489d96328d1c0bde…

MALICIOUS

PDF

45.5 KB Created: 2021-05-13 00:49:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 89cb3989324d33daab2be5c95bb42841 SHA-1: 621d2814cabc938dca737a4dbe65facdece14f42 SHA-256: 489d96328d1c0bde75b3ed0dbaacdbd54ca3ef236353887844128a8be4b299b8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, with one prominent URL leading to a known malicious redirector infrastructure disguised as a game hack generator. The document body and heuristics indicate a lure for users to click these links, likely to download further malicious content or redirect to phishing sites. No scripts were extracted, but the embedded URLs and the nature of the lure strongly suggest a malicious intent to exploit user curiosity for game-related cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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-hack-coin-master-without-root-game-hack In PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/roblox-points_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/free-robux-no-verification-needed_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_off00004b56.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B56 25344 bytes
SHA-256: 75f451d086d63a4c9fd9994ff43968d6c8492155d87927114773e5ef101b4bf5
font_01_sfnt_off00008528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8528 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008eda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDA 18384 bytes
SHA-256: 737d2cfdb9b4b1cff5b2208f55c42f49b9f58f49348aca7b669208ba5fc29a16

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