Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0c769e39376013e…

MALICIOUS

PDF

42.3 KB Created: 2021-05-15 06:46:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 27c7a249e176c0b8bd87786d4c5bd7a9 SHA-1: b5829e0614a24a112467d52b176d07f413294195 SHA-256: a0c769e39376013e83cfe0fd0811bfad4879d1dbc6cb6ab973d6f87da57adf42
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free currency' lures. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-hacks-that-work-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a social engineering attack designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/coin-master-hacks-that-work-game-hack In PDF document text
    • https://www.linzgau-kjh.de/images/mc-update_GM479516143.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/hack-minecraft_GM479516143.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/free-magical-chest-coin-master_GM406889139.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/free-coins-and-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.linzgau-kjh.de/images/how-to-get-minecraft-pe-for-free_GM479516143.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_off000049a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49A9 25088 bytes
SHA-256: 29e107b87181746f428c22cd0a1d992979819afd3285ab5de62c1b5778dfb59e
font_01_sfnt_off0000837b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837B 18080 bytes
SHA-256: a256473b464e1451fa8156fe2d40fad7cf096e7b0a57ca1e64cc78dc1e83e30f

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