PDF malware analysis — malicious · 192fcc3c87b7bf78

MALICIOUS

PDF

42.4 KB Created: 2021-05-12 12:03:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: f5dcf76113e503b0975421b385ee94d1 SHA-1: 51b8a01a3f6a5ae0d53d89fa631b37b631a09c14 SHA-256: 192fcc3c87b7bf7841a2d624ee3591dca1c18a3c105deae621b8e559164ca749

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 0.9971

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-free-spin-no-offers-game-hack PDF link annotation
- https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
- http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
- https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/apk-hack-coin-master_GM406889139.pdfIn PDF document text
- http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
- https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
- https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/buxblast-com-robux_GM431946152.pdfIn PDF document text
- https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
- https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
- http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
- https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
- http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
- http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
- https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
- http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
- https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link-facebook_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_off000049c8.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49C8	26292 bytes
SHA-256: `6ecdb275c93ea085835adc9ab7b5b4250638179e73038cba22df2950e1365864`
`font_01_sfnt_off0000848a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x848A	17884 bytes
SHA-256: `eca834da90127d06b30cbbdb6bc39378e5aaec836d7f1468a5bfe601ae733219`

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