PDF malware analysis — malicious · 93a484e0c3a5ae8d

MALICIOUS

PDF

33.3 KB Created: 2021-07-03 19:07:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: db72d4a7837fc347e4f4c439062ef79b SHA-1: af554b14924c7cc7b28227ba9bc38fd3ee180006 SHA-256: 93a484e0c3a5ae8d0ab8e23e1683dce15131c69c94eb9c32f26ddcfc8f6cf268

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/479516143/play-minecraft-online-free-game-hack PDF link annotation
- https://tuidonghe.vn/public/upload/files/what-to-do-if-someone-hacks-your-roblox-account_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/roblox-free-printables_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/roblox-dinosaur-simulator-dna-hack_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/safe-mac-roblox-auto-clicker-free_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/how-to-hack-roblox-bee-swarm-simulator_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/10-000-robux-for-free_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/coin-master-code-hack_GM406889139.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/minecraft-hack-app_GM479516143.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/free-roblox-accounts_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://tuidonghe.vn/public/upload/files/coin-master-daily-free-spin-app_GM406889139.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_off00002ef8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2EF8	22140 bytes
SHA-256: `d6c18762603ff23c64b5dfbf0e7956f1db708fe0f84aa3789abbb79ea7036e48`
`font_01_sfnt_off00005fac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FAC	18264 bytes
SHA-256: `6af20249b3fc91c6ba778d93b5b7f70c4b9d84eb0b0988d9fc165060c8c986e2`

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