Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a1dbbff34f3ff7…

MALICIOUS

PDF

43.8 KB Created: 2021-06-09 06:46:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0525ee6f62bc8a114a714f31f0265b4d SHA-1: 50f79756dfd13598e3d34da79315aa16c0620b08 SHA-256: c6a1dbbff34f3ff73a3448d1fa4bb588585abc99be69698dc5c274b4b9a5d259
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, masquerading as a game hack generator. The presence of a visual download button and the lure of free game hacks suggest a social engineering tactic to trick users into visiting the malicious URL. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/free-roblox-gfx-game-hack In PDF document text
    • https://library.sman1berau.sch.id/repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-game-download-ios_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/best-way-to-get-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-december-hack_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-place_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coinmaster-com_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spin-link-daily_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
stream_004_off000050cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50CC 24792 bytes
SHA-256: 77b578a0650c566f7380c18b4ffc3edeca49434ac7d63265ed55cb49b8e71828
font_01_sfnt_off000089a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A2 17948 bytes
SHA-256: edf37cea4d9572b79aff99b5f3e3e51e81091579a2693570fa47b81a4934fab1

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