PDF malware analysis — malicious · 918156ad259550be

MALICIOUS

PDF

43.2 KB Created: 2021-05-16 23:45:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: e1dc9eac9b7ad8569eb1c4e3245605d7 SHA-1: fcb3cd3de8ea46389666c28bf68b690873e9236f SHA-256: 918156ad259550becd0361144bd38b2fdafe8e5d4e019176a3bc82f1cab1c301

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, specifically pointing to a URL related to 'Coin Master free spins'. The document body, though heavily obfuscated, contains similar phrasing and the same malicious URL. This suggests a social engineering lure to trick users into visiting a potentially malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

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/como-sacar-buen-puntaje-en-juego-coin-master-free-spins-game-hack PDF link annotation
- https://www.itc-nekretnine.hr/files/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
- http://itc-nekretnine.hr/files/roblox-money-hack_GM431946152.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/free-robux-working_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
- http://itc-nekretnine.hr/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/free-robux-easy_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/www-rbxhut-com_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/gamehunters-coin-master_GM406889139.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_off00004ad6.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4AD6	24656 bytes
SHA-256: `b31142a026fe6902bf2b63f190fc5e2707dcfa1d105265fdcd6ef25c18491483`
`font_01_sfnt_off000083a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83A9	19300 bytes
SHA-256: `a999f1598a4501f5f783419f8da301233983d083d12737938f9657e03ab31652`

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