Malicious PDF — malware analysis report

Static analysis result for SHA-256 e16787b61c7c3f7e…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 10:29:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1a2b20d0c34269d5006e24b439213d19 SHA-1: 1794f36f0833a4dffd459a5e4b80fea67363d196 SHA-256: e16787b61c7c3f7e69fa27793717debf1459007f6871a87b9a0739d2b628dd0e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a redirector lure, specifically advertising a 'free generator / game hack'. The embedded URL, http://netcdn.co/app/479516143/free-minecraft-server-maker-game-hack, is identified as malicious infrastructure. The document body also contains this URL and other links to similar lure pages, reinforcing the social engineering aspect of the attack. No scripts were extracted, but the primary attack vector appears to be a malicious link within the document.

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.co/app/479516143/free-minecraft-server-maker-game-hack In PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-robux-back-if-i-was-hacked-2021_GM431946152.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/hack-coin-master-apk-32_GM406889139.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/earn-rbx_GM431946152.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-blox-piece-hacks_GM431946152.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-present-free_GM431946152.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://pedungan.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-many-free-spin-links-is-there-for-coin-master_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_off000034c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34C9 22448 bytes
SHA-256: f7e6dd530572dea559faed708257ea3350886d6299254372c1c6df0c4c6c9134
font_01_sfnt_off000066c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C9 18140 bytes
SHA-256: 4d8f446a07284d2b74bc3dfb09f0ed23269edb372b2ad478870f6856de952225

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