PDF malware analysis — malicious · 0a9bf21fac5c2287

MALICIOUS

PDF

47.4 KB Created: 2021-06-08 14:37:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 664f37005f12b406325aa354cebab913 SHA-1: 35d29b7eba063c8aeee7b6759d556c3bcdbe5dbe SHA-256: 0a9bf21fac5c22875913f4a3027cf443f729e2fecb1a2fdfbabab5926e9deccf

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 0.9832

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.tw/app/431946152/free-robux-no-verification-2021-ios-game-hack PDF link annotation
- https://goodtools.tw/upload/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/tiktok-free-palestine_GM835599320.pdfIn PDF document text
- https://goodtools.tw/upload/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/roblox-jailbreak-hack-endless-robbing_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-robux-android_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/roblox-hacks-com_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/i-need-robux_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_off000054eb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x54EB	27776 bytes
SHA-256: `d0dbe4f62dbee6149ff763622c9466cb0c2d4c85d284a7a4d5fc23c53147ef55`
`font_01_sfnt_off0000949c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x949C	19004 bytes
SHA-256: `57c461ba4099b7c3a729e07f809cac2bd0540fe115d61d2f21d5ca70446f19e8`

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