Malicious PDF — malware analysis report

Static analysis result for SHA-256 d915173c8aca6d3f…

MALICIOUS

PDF

49.9 KB Created: 2021-05-13 20:39:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7a64cbc6175ff344fa14df5d6865981f SHA-1: 7b15521fa437732286e0f77a25c3b19c6fce342f SHA-256: d915173c8aca6d3f682c678acaa725512596771bafe069fc3830cb3085e827a6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it links to malicious redirector infrastructure, specifically a 'free generator / game hack' lure. The embedded URL, https://netcdn.xyz/app/406889139/free-spins-and-coins-com-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to lead the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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/free-spins-and-coins-com-game-hack In PDF document text
    • https://ccej.lviv.ua/images/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/i-want-robux_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-roblox-svg_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/level-coin_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/give-free-robux_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a1e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A1E 25156 bytes
SHA-256: 3c02644329801b7bcf15769fa7efdcd72844f7fe9e487fa5c0df2c2e463d3fe1
font_01_sfnt_off00008349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8349 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D2E 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_03_sfnt_off0000a1b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1B9 17988 bytes
SHA-256: 4395ae37e1cfbc76b43b42005ca4fd09817d06c76feeafad5bf4b4e665587051

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