PDF malware analysis — malicious · 852e7f96b2941236

MALICIOUS

PDF

33.6 KB Created: 2021-07-03 16:31:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 842259b432a82ad389dcb5fedbb7454a SHA-1: f7ab6b4d7fb1dea1e7f7d73b77d509add6ab8d04 SHA-256: 852e7f96b294123658c0f5ebc306ba88df1b68d3d1923cde1d93f064e961682d

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 0.9980

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 http://netcdn.tw/app/406889139/cheating-hacks-for-coin-master-game-hack PDF link annotation
- https://www.knjiznica-oroslavje.hr/files/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-robux-robloxwin_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/roblox-hack-game_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-roblox-no-sign-up_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/blox-piece-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/krnl-download_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-robux-2021-december_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-robux-obby_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/coin-master-hack-fast-org_GM406889139.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/free-roblox-hack_GM431946152.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_002_off00002dbc.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2DBC	22744 bytes
SHA-256: `244df3a0dea9cec2e297da92ad30066ab17c0afdce5cb6e4102e9828d3e6d8a9`
`font_01_sfnt_off000060dc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60DC	18332 bytes
SHA-256: `8bb7d0e3174467ad207b261381ef4eac10a5e073e0a89fef77a23780e0cfc6dd`

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