PDF malware analysis — malicious · 015f388554d0a461

MALICIOUS

PDF

34.2 KB Created: 2021-07-09 01:56:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22

MD5: dbd6f420ba76d2b2a7989437d55d6405 SHA-1: 1344715f8d830f28f45d2dad92faa67609e1b021 SHA-256: 015f388554d0a46188179de2d8560bf167382e8092ff4398552d93285b70273a

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/coin-master-34-5-hack-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/install-free-game-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-font-free_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-really-easy_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/get-more-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/shirt-roblox-template-free-shipping_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/speed-hack-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-put-hack-script-to-roblox-parkour_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/what-day-does-john-doe-hack-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-roblox-on-mac-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/pubg-uc-no-verification_GM1330123889.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-more-spins-on-coin-master-for-free_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
`font_00_sfnt_off000030f6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30F6	22336 bytes
SHA-256: `5e9ff1c7e21cbb62c9b375575fd320780492a86b52ab69710cfe13d5a45ce725`
`font_01_sfnt_off0000626f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x626F	18376 bytes
SHA-256: `454748033da4f0fb466ea71bb3633c38fd13d37d387cf2400721ec0bcd849771`

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