PDF malware analysis — malicious · 5c14ba31fe28dbd8

MALICIOUS

PDF

46.4 KB Created: 2021-06-11 00:03:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 766e21d02a05fb7fffdeb1004f8c0e77 SHA-1: 1486696cc04d36ea0c4a370e68234a8e9d76b854 SHA-256: 5c14ba31fe28dbd869be14119d3ddfa5e2afa2bb2a7824bd22152c8963be45c8

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 0.9832

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.tw/app/431946152/free-cracked-roblox-accounts-game-hack PDF link annotation
- https://www.knjiznica-oroslavje.hr/files/info-roblox-com-robux_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-robux-hack-2021-pc_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/roblox-apk-hack-uptodown_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-roblox-promo-codes-for-wing-2021_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/level-coin_GM406889139.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/fake-robux-codes_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/free-gifts-coin-master_GM406889139.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/coin-master-code-hack_GM406889139.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/pubg-uc-uk_GM1330123889.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/www-roblox-com-robux_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
`font_00_sfnt_off00004ee8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4EE8	30880 bytes
SHA-256: `f37c7289471c34ccbc2724b480a53c670be8b85b3b295b2272bd6e693b575472`
`font_01_sfnt_off0000917d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x917D	18764 bytes
SHA-256: `a99f7a2f4c88e1f2b12391a51ae05af366c09e5f914937675999ba71f1cdde19`

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