PDF malware analysis — malicious · 0c3a36cd47706024

MALICIOUS

PDF

51.7 KB Created: 2021-06-07 11:42:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 210c3dc3ad54675c042a97da9dfaa4c0 SHA-1: 2a46ae35272698c8161472d6e54bb9d5352e077e SHA-256: 0c3a36cd47706024989bd6bac249fe657db2315ee30c20ca873311b0feb453c9

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 0.9880

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-robux-on-ipad-no-human-verification-game-hack PDF link annotation
- http://korporacjaroma.pl/images/strucid-aimbot_GM431946152.pdfIn PDF document text
- http://korporacjaroma.pl/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
- http://korporacjaroma.pl/images/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://korporacjaroma.pl/images/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
- http://korporacjaroma.pl/images/free-robux-clothes_GM431946152.pdfIn PDF document text
- http://korporacjaroma.pl/images/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
- http://korporacjaroma.pl/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://korporacjaroma.pl/images/how-to-get-free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
- http://korporacjaroma.pl/images/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
- http://korporacjaroma.pl/images/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
- http://korporacjaroma.pl/images/free-robux-apk_GM431946152.pdfIn PDF document text
- http://korporacjaroma.pl/images/mcpe-client_GM479516143.pdfIn PDF document text
- http://korporacjaroma.pl/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
- http://korporacjaroma.pl/images/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://korporacjaroma.pl/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://korporacjaroma.pl/images/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
- http://korporacjaroma.pl/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
- http://korporacjaroma.pl/images/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
- http://korporacjaroma.pl/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
- http://korporacjaroma.pl/images/get-free-spins-coin-master-2021_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_004_off0000525e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x525E	37228 bytes
SHA-256: `3113f016ab1bd6a905d39d9e049b4ab126861a131f6176a9f60d39f7becf9094`
`font_01_sfnt_off0000a578.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA578	19212 bytes
SHA-256: `ae592217c234b791857179e8828fa3fe9caf09a17a40fbf0d23f2120fdffb5a0`

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