MALICIOUS
180
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a malformed stream and links to a known malicious redirector infrastructure, specifically http://netcdn.co/app/431946152/free-robux-gift-card-hack-game-hack. This infrastructure is used to lure users with promises of free game items, likely leading to further malicious downloads or phishing. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 5
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PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LUREPDF'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.
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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Embedded URL info EMBEDDED_URLOne 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 http://netcdn.co/app/431946152/free-robux-gift-card-hack-game-hack In PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/roblox40com-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/hacked-bunny-ears-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-roblox-promo-codes-2021-february_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/roblox-design-it-cheats_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/how-to-win-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/roblox-promo-codes-2021-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-promo-codes-roblox-october-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/wfb-roblox-hacker_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/descargar-hacks-para-roblox-gratis_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/roblox-redeem-card-codes-free_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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000031d4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x31D4 | 21620 bytes |
SHA-256: 91853f57252da9ea94f91668d2b34e0ca485c146652e77cbcd658dfdb6d226d2 |
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font_01_sfnt_off0000613b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x613B | 19284 bytes |
SHA-256: c8a315d45a4adcf65830cf56f6243d0c846b50d3b79d0de13c39a1cc07c10f8a |
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