PDF malware analysis — malicious · ba403aff1bf7a8d9

MALICIOUS

PDF

43.6 KB Created: 2021-05-17 04:31:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 9d38f88a4cab0002f3bf1ea7e3336c6e SHA-1: a94c55cbff59b4a3f5f852e899c06a736cc1e6e7 SHA-256: ba403aff1bf7a8d94eaf191d0267dbb8768eb76ade1e119f4c63a7bcf2b5cd8a

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 0.9648

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-game-hack PDF link annotation
- http://klinkeridee.de/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- http://klinkeridee.de/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
- http://klinkeridee.de/images/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/coin-master-hack-fast_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
- http://klinkeridee.de/images/minecraft-packs-free_GM479516143.pdfIn PDF document text
- http://klinkeridee.de/images/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
- http://klinkeridee.de/images/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/cheats-for-coin-master_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
- http://klinkeridee.de/images/coin-master-rewards_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
- http://klinkeridee.de/images/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/game-give-free-robux_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_off0000465b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x465B	24700 bytes
SHA-256: `6c0d059731a1e5d57712ca25cefe37f312a34de714dbfb0f8555e7d2b13447c0`
`font_01_sfnt_off00007e0e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E0E	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off000087c0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87C0	18308 bytes
SHA-256: `e42bde5f0ce420544e36e42831a39ceefa2103814e02a0c87b67b282abd28734`

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