PDF malware analysis — malicious · f093e8ac410b0da8

MALICIOUS

PDF

47.3 KB Created: 2021-05-17 03:05:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: a76fabe8b5bce6443637fe67a616deb3 SHA-1: 677d144b5f23ee9f7a63b4988b8e8481be74934d SHA-256: f093e8ac410b0da8f09c0ba1be9c9dcd3b69284a7b6d80be6a939c2c95b7669c

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 0.8948

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/431946152/free-robux-no-email-game-hack PDF link annotation
- https://www.astrospace.com.tw/upload/files/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-free-accessories_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-roblox-passwords_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/create-minecraft-server-free_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/robux-com-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-roblox-gift-card-codes_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-groups-2021_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/minecraft-kill-aura_GM479516143.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_off000049a0.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49A0	26996 bytes
SHA-256: `c354d679dae7dfee56b902288ac079c7027c1031791e8fc9bd72f0806ec81e58`
`font_01_sfnt_off00008846.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8846	3992 bytes
SHA-256: `43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd`
`font_02_sfnt_off0000956d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x956D	18696 bytes
SHA-256: `c87d8ac99bb6295dbf621d5ce4d48bdb441e63486eed0d538621ad0af406e722`

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