PDF malware analysis — malicious · 8db9afc8763b097a

MALICIOUS

PDF

45.8 KB Created: 2021-05-14 11:34:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: f0fe4e9fe7974fb6419598c20a5e4026 SHA-1: 173c0159d37e056458e75e2b1800435c61457f45 SHA-256: 8db9afc8763b097a9f4c1c683a5e3b8d69819baccafdd650cb8c8d37475e8513

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, specifically mentioning 'free Robux'. The document body also contains similar lures and embedded URLs pointing to potentially malicious sites. While no scripts were extracted, the presence of these lures strongly suggests an attempt to trick the user into visiting a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9432

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-2021-no-verification-game-hack PDF link annotation
- http://www.inoxograde.hr/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-mod_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/free-robux-come_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/give-me-robux_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-coins_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-hack-mod_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/free-roblox-characters_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-mast-hacks_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/free-robux-that-actually-works_GM431946152.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_off00004a42.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A42	25336 bytes
SHA-256: `4004903abba2e808b3d15024f5b91d879928a3bc797836f53167ff89caf691a1`
`font_01_sfnt_off00008418.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8418	2816 bytes
SHA-256: `4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f`
`font_02_sfnt_off00008e28.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E28	19004 bytes
SHA-256: `66494d2150ad1cf2ec2ec7771a558690eaf6f54b49f1e3390ebbe78937767b49`

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