Malicious PDF — malware analysis report

Static analysis result for SHA-256 09c88464fab4932c…

MALICIOUS

PDF

42.6 KB Created: 2021-05-10 22:03:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: facc65072a13a8367f960aae7124c198 SHA-1: f9f6e6b6c3aa952f148e47d9da08adae191719f0 SHA-256: 09c88464fab4932ce0940820b77cdb56653ea217c906b26557e8cd4fbb69f9a7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game currency (Robux) to entice users into clicking malicious links. The document contains multiple embedded URLs, including a primary redirector at `https://netcdn.xyz/app/431946152/dailyrobux-game-hack`, which is flagged as malicious. The presence of a 'download button' heuristic further suggests a malicious workflow intended to lead the user to a harmful resource.

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/431946152/dailyrobux-game-hack In PDF document text
    • https://heimatverein-oberlangen.de/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/coin-master-spins_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_003_off00004843.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4843 25416 bytes
SHA-256: cfd3f558ed64b44411df6c1744e7d566a20ee7383c7cb751a193f00352ec1577
font_01_sfnt_off0000833c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x833C 18620 bytes
SHA-256: 006376ad9c7b73d4fd15d3b6dd3ffa9064f0af8ff6d6cdc29d45d1e9c8c3f0f5

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