PDF malware analysis — malicious · 446bbcde9f90cbc2

MALICIOUS

PDF

50.5 KB Created: 2021-06-07 02:56:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 44668edfa9f5f197190c76fd6a2597d9 SHA-1: d6820ec7a4c26222ffe74f2743316d0a1bf7d3e4 SHA-256: 446bbcde9f90cbc2ef7ed0e4a7bd750d20285aba7268de1ec95e3d5af68fa9b1

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 0.9779

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.tw/app/431946152/how-to-get-rc7-roblox-for-free-game-hack PDF link annotation
- https://www.fhccu.com/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
- https://www.fhccu.com/images/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
- https://www.fhccu.com/images/how-to-play-coin-master_GM406889139.pdfIn PDF document text
- https://www.fhccu.com/images/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
- https://www.fhccu.com/images/minecraft-client_GM479516143.pdfIn PDF document text
- https://www.fhccu.com/images/free-robux-without-verify_GM431946152.pdfIn PDF document text
- https://www.fhccu.com/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.fhccu.com/images/coin-master-homepage_GM406889139.pdfIn PDF document text
- https://www.fhccu.com/images/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.fhccu.com/images/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
- https://www.fhccu.com/images/free-robux-discord_GM431946152.pdfIn PDF document text
- https://www.fhccu.com/images/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.fhccu.com/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
- https://www.fhccu.com/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
- https://www.fhccu.com/images/roblox-getting-hacked_GM431946152.pdfIn PDF document text
- https://www.fhccu.com/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.fhccu.com/images/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.fhccu.com/images/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
- https://www.fhccu.com/images/roblox-sign-in-free_GM431946152.pdfIn PDF document text
- https://www.fhccu.com/images/coins-master-hack_GM406889139.pdfIn PDF document text
- https://collectrobuxIn 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_004_off00005316.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5316	29440 bytes
SHA-256: `7f913889f434476218337517f1823f36f96756ec3c3dc4b30926d9c38c4a5031`
`font_01_sfnt_off000095b9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x95B9	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off0000a2cb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA2CB	18272 bytes
SHA-256: `1a59c5611c22c64e94277035e42713b8e96de918cc5d635f3536276f615e6694`

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