PDF malware analysis — malicious · c8d50469ff551443

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 18:58:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 4b5a4c9c4eede3a208f7bc845a5b084b SHA-1: 6cc86eeee4119faffef10ff21f068548a8528663 SHA-256: c8d50469ff5514432d954c00ed278b850ec63fb00a9a8a1fbd6e7e56201596b2

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/free-spins-coinmaster-game-hack PDF link annotation
- http://polycraft.ae/uploaded_files/userfiles/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/how-to-hack-into-your-roblox-accout-witout-the-password_GM431946152.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/roblox-robux-hack-download-for-andriod_GM431946152.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/coin-master-time-hack_GM406889139.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/can-you-get-bloxburg-for-free-on-roblox_GM431946152.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/getrobux-come_GM431946152.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/hacked-appbounty-roblox_GM431946152.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/how-do-you-finish-getting-free-robux_GM431946152.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/roblox-rape_GM431946152.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/hack-robux-for-roblox_GM431946152.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/near-tiktok-free-account_GM835599320.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
- http://polycraft.ae/uploaded_files/userfiles/files/free-minecraft-printables_GM479516143.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_off0000323d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x323D	23136 bytes
SHA-256: `884b4491b81177e43003364248a6ca3b209f88010482e35c26125867748c0abf`
`font_01_sfnt_off0000666a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x666A	18432 bytes
SHA-256: `82bdd102b9bb03cf6f5fadaf1f6d4f135f15d3242454ad2f3b5f1fa21e8b8859`

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