PDF malware analysis — malicious · bc46012e2036dd30

MALICIOUS

PDF

45.7 KB Created: 2021-05-12 16:31:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 55adda554e41bdd893eb5d2c18a12b5f SHA-1: 73dd5fac521525486399180fe9f7a9d39328d14d SHA-256: bc46012e2036dd30241f9649501a4e67eac2c8f10a3d8bff2c809a2e1d0557c3

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure, specifically targeting Coin Master and Roblox. The embedded URL, https://netcdn.xyz/app/406889139/coin-master-daily-free-spins-25-game-hack, is likely a redirector to a malicious site or a download. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into visiting a compromised site, aligning with a spearphishing attachment tactic.

Machine Learning

Nyx PDF Classifier malicious score 0.9507

Heuristics 4

PDF links to a 'free generator / game hack' redirector high 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.
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
External URI info PDF_URI

PDF contains an external URL action
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-daily-free-spins-25-game-hack PDF link annotation
- https://www.gymun.cz/images/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
- https://www.gymun.cz/images/coin-master-game-hunter_GM406889139.pdfIn PDF document text
- https://www.gymun.cz/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- https://www.gymun.cz/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.gymun.cz/images/coin-master-ad_GM406889139.pdfIn PDF document text
- https://www.gymun.cz/images/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
- https://www.gymun.cz/images/minecraft-handbook_GM479516143.pdfIn PDF document text
- https://www.gymun.cz/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.gymun.cz/images/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.gymun.cz/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
- https://www.gymun.cz/images/hack-robux_GM431946152.pdfIn PDF document text
- https://www.gymun.cz/images/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.gymun.cz/images/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
- https://www.gymun.cz/images/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
- https://www.gymun.cz/images/facebook-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.gymun.cz/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://www.gymun.cz/images/rbx-com_GM431946152.pdfIn PDF document text
- https://www.gymun.cz/images/roblox-com-r_GM431946152.pdfIn PDF document text
- https://www.gymun.cz/images/minecraft-items_GM479516143.pdfIn PDF document text
- https://www.gymun.cz/images/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004c10.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C10	25520 bytes
SHA-256: `37edc65954a69fd15739833103e829ef5f1a321430710d7d1ac926c2a2971d3b`
`font_01_sfnt_off00008566.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8566	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00008f18.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F18	18568 bytes
SHA-256: `b4b281bb5b6dfe092bf3b90adf491610ab408f1d3fe0f6ae1605b441ac4007a5`

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