PDF malware analysis — malicious · 8db293d90a8c562b

MALICIOUS

PDF

34.0 KB Created: 2021-06-28 09:02:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 646c74323bf06670bd4e117a6bfaef36 SHA-1: 150f05ecddd40f9ced4d086c4d730bb25f58422f SHA-256: 8db293d90a8c562bd0dde06dea3685cb553610c70d51b8e3fd444158a7124da2

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.co/app/431946152/how-to-look-like-a-hacker-in-roblox-game-hack PDF link annotation
- https://www.astrospace.com.tw/upload/files/can-you-give-me-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-uno-card-roblox-skin_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-coins-on-tiktok-for-free_GM835599320.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-hair-free-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-250-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-generator_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/rbx-com_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_off00002e41.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E41	22304 bytes
SHA-256: `f151b77a367d3c490431aedd00b371f8da6a27d966014a5966a4b504e998177a`
`font_01_sfnt_off00005fff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FFF	18940 bytes
SHA-256: `f1a3429b1e3846ef4d252460c2a328634144e06b09ca851d9a6ee6debc9f505c`

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