PDF malware analysis — malicious · e195f186febca425

MALICIOUS

PDF

50.9 KB Created: 2021-06-07 09:53:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 255b77cac8527e65077096b7af03e9f0 SHA-1: 16eeec4783147a69ead2e3f95e1a1c5dfdb41358 SHA-256: e195f186febca42558f0f29b4385a1f6d2928f6b0556d998fc210b68e4be0865

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. 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 0.9724

Heuristics 5

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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/gears-online-rpg-roblox-hack-game-hack PDF link annotation
- https://biospray-online.com/ckfinder/userfiles/files/minecraft-beta-free_GM479516143.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/roblox-robux_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/coin-master-tool-hack_GM406889139.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/minecraft-app-free-download_GM479516143.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/tiktok-free-template_GM835599320.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/i-want-free-robux_GM431946152.pdfIn PDF document text
- https://biospray-online.com/ckfinder/userfiles/files/robux-gratis_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005200.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5200	30104 bytes
SHA-256: `eecfb89fab43026ded410efdecf48cc68389e301d944fac9c7dd24ab66718f5e`
`font_01_sfnt_off000095bf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x95BF	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off0000a2d1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA2D1	18764 bytes
SHA-256: `6df334599225aba87fb8eae0882584d93169e619849f277148d0e4fd3a017857`

Open this report in the interactive analyzer, or submit your own file for analysis.