Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d8beb632ac4f4f…

MALICIOUS

PDF

48.0 KB Created: 2021-06-11 01:06:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c08ffbdede2b6fca3cc905f0f4ef1eae SHA-1: 2b6151135672dadd57f51c7a3abd415e71617281 SHA-256: 09d8beb632ac4f4fffb8bc3a52a6b540f6155c8c8118b992823326ef4734ff1b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a URL associated with game hacks and free Robux, a common lure for phishing or malware distribution. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. Although no scripts were extracted, the document body and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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/crystalsheepyoutube-how-to-get-free-robux-game-hack In PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/pokemon-go-free-808-pokedex_GM1094591345.pdfIn PDF document text
    • https://perpustakaan.man2kotaserang.sch.id/repository/free-roblox-exploits-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/robux-gainer_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/roblox-sexually_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/coin-master-hack-apk-july-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/is-hacking-on-roblox-illegal-in-australia_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/roblox-cheat-engine-lua-table-scripts_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/how-to-hack-roblox-accounts-passwords_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_off00005361.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5361 30392 bytes
SHA-256: 6929725373032d1d0a12db4d8ed5d6ea1bc67350f6e967c08aa23e4396fd1fe5
font_01_sfnt_off00009702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9702 19108 bytes
SHA-256: 6487dc0a45f823d8f4e34f33d82fc22e5b401fa8f94f5943642b7eec6e591db9

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