Malicious PDF — malware analysis report

Static analysis result for SHA-256 63fca9c114284c39…

MALICIOUS

PDF

49.3 KB Created: 2021-06-11 08:51:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f252dc4d1fc83647f12d01953b19a0ef SHA-1: 27ba7a483dc127b0ee2be9b83f75b8dbdfd228cf SHA-256: 63fca9c114284c39a04f926422a3d6c13532e9b2cb9fb6e7775b2b0d98c09ed3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary link, https://netcdn.tw/app/431946152/como-hackear-robux-game-hack, is identified as a malicious redirector. The document body and embedded URLs reinforce the theme of exploiting games for in-game currency, a common social engineering tactic. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/como-hackear-robux-game-hack In PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-free-robux-code-generator_GM431946152.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-working_GM431946152.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-robux_GM431946152.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/krnl-roblox_GM431946152.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-vip-hack_GM406889139.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/pokemon-go-mod-apk-joystick-free-download_GM1094591345.pdfIn PDF document text
    • https://bkpsdm.denpasarkota.go.id/new/public/ckfinder/userfiles/files/hacker-coin-master_GM406889139.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_004_off000051d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51D8 28688 bytes
SHA-256: 8112e8a59693ad4e04b95f75db6f19969d112f796a35a86ee4ae00e658830d58
font_01_sfnt_off00009396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9396 2852 bytes
SHA-256: e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f
font_02_sfnt_off00009d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D58 18508 bytes
SHA-256: 278e67c77e6f530d609dfd6a1c4d37c2ebb3cc0825f3fcf9b0e7cea3e5846666

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