Malicious PDF — malware analysis report

Static analysis result for SHA-256 229a7d0bd86ad403…

MALICIOUS

PDF

45.6 KB Created: 2021-06-11 06:18:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 17ab3bd3f3ec8b3ae9c31631759bd977 SHA-1: acd3060fb014d72bbd4583ec73a9db9041cb89b6 SHA-256: 229a7d0bd86ad403ffdb376624c6d60e1975bd187fd689e1bb6a5f6fc8dbb45a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to a redirector infrastructure, specifically advertising 'free Roblox codes' and 'game hacks'. The primary link identified, https://netcdn.tw/app/431946152/free-roblox-codes-2021-october-game-hack, is flagged as malicious and part of a redirector chain. This suggests the document's purpose is to trick users into visiting malicious sites, likely to download further malware or engage in other malicious activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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-codes-2021-october-game-hack In PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/pastebin-roblox-hack-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/halloween-free-skins-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/cute-shirts-that-are-free-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-coins-on-assassin-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/map-kat-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/exploit-hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-card-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-hack-a-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/robux-free-online_GM431946152.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_off0000547b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x547B 25140 bytes
SHA-256: 43e647cca2052abe0291a0902778caf23cf57d2c6e292f77547c73b178ba81b1
font_01_sfnt_off00008e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E7D 18628 bytes
SHA-256: b4d6b460f0a403540389d909385a907310fe189f024aaf5508ef49239bcfa508

Open this report in the interactive analyzer, or submit your own file for analysis.