PDF malware analysis — malicious · 9bc439db21af44f4

MALICIOUS

PDF

36.0 KB Created: 2021-07-04 08:21:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: d6d3dd77659b544b98398b1ade6bc516 SHA-1: 4d081da186ddf35ac4679b340f5491f7a0176384 SHA-256: 9bc439db21af44f4f6d3f860193bac055a8233eefa34bbcc26b767e882913cc8

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/coin-master-apk-hack-2021-game-hack PDF link annotation
- http://nationshield.ae/userfiles/files/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/coin-master-game-hacking_GM406889139.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/give-free-robux_GM431946152.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/how-to-get-free-robux-on-roblox-2021-no-hacks_GM431946152.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/free-roblox-avatar_GM431946152.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/auto-jump-script-roblox-hack_GM431946152.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/best-pklayed-games-free-roblox_GM431946152.pdfIn PDF document text
- http://nationshield.ae/userfiles/files/mobihack-net-roblox-hack_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
`stream_002_off00003443.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3443	23332 bytes
SHA-256: `808801ccfd46de14cb86b3da8485592a3d05a3e0acf5f150753d8d2bee56c8a6`
`font_01_sfnt_off000068e9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68E9	18580 bytes
SHA-256: `9ddf7aed626e59ba525b858e6801d404809e6e62faeb09e5b62449fd66731fe4`

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