PDF malware analysis — malicious · f4bbcfce08261eb2

MALICIOUS

PDF

44.9 KB Created: 2021-05-13 10:41:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 2ffadf5337b94daf11272503ccc83b59 SHA-1: 9dfd1cba5e9c5404f98e73ba46c351ebdbe8c430 SHA-256: f4bbcfce08261eb2e1698b33b49bcd759a6a4cd62d28a71b8a065ccaf49f47de

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 0.9632

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/free-spins-coin-master-links-no-human-verification-game-hack PDF link annotation
- https://www.insol-europe.org/uploads/files/files/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/minecraft-app-store-free_GM479516143.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-robux-ad_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/buy-robux-free_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/roblox-com-www_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_off00004a00.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A00	24640 bytes
SHA-256: `98101f83da570f05cc1a91122ff1518a845404b124459d8e7daf2deceebb367c`
`font_01_sfnt_off0000827f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x827F	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00008c31.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C31	18588 bytes
SHA-256: `5a08ca623146824177ccf371c197f16efef4c40a95708a9224bf5d86e8191d65`

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