PDF malware analysis — malicious · 8b306b95154a0f99

MALICIOUS

PDF

42.4 KB Created: 2021-05-13 15:29:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: a3c49a74b3afce53e7c0c28b4a7bb394 SHA-1: afaf3f30704b5da1f4b119ae7c0c54f8f21e0e11 SHA-256: 8b306b95154a0f99c3a16f3abb586bc9df45bac47f1e2051e0deceed36749a23

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body, though heavily obfuscated, contains references to 'Coin Master' and 'free spins', aligning with the lure. The presence of embedded URLs further supports the malicious intent of redirecting users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-daily-free-spins-25-game-hack PDF link annotation
- http://www.homesweethome.pl/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
- http://www.homesweethome.pl/images/free-robux-groups-2021_GM431946152.pdfIn PDF document text
- http://www.homesweethome.pl/images/how-to-free-robux_GM431946152.pdfIn PDF document text
- http://www.homesweethome.pl/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- http://www.homesweethome.pl/images/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.homesweethome.pl/images/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
- http://www.homesweethome.pl/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
- http://www.homesweethome.pl/images/hack-master-coin_GM406889139.pdfIn PDF document text
- http://www.homesweethome.pl/images/free-robux-easy_GM431946152.pdfIn PDF document text
- http://www.homesweethome.pl/images/robuxglobalcom_GM431946152.pdfIn PDF document text
- http://www.homesweethome.pl/images/coin-master-extra-spins_GM406889139.pdfIn PDF document text
- http://www.homesweethome.pl/images/coins-master-hack_GM406889139.pdfIn PDF document text
- http://www.homesweethome.pl/images/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
- http://www.homesweethome.pl/images/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
- http://www.homesweethome.pl/images/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.homesweethome.pl/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
- http://www.homesweethome.pl/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- http://www.homesweethome.pl/images/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
- http://www.homesweethome.pl/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
- http://www.homesweethome.pl/images/how-to-get-free-robux-no-human-verification_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
`stream_003_off00004892.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4892	25372 bytes
SHA-256: `5ce5e8129fc23d25d51cb799e48de08c2785aa8f1fab54888b00d56d3186df3f`
`font_01_sfnt_off00008278.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8278	18568 bytes
SHA-256: `b4b281bb5b6dfe092bf3b90adf491610ab408f1d3fe0f6ae1605b441ac4007a5`

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