PDF malware analysis — malicious · 41433a4cac6d0c49

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 07:54:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 79e7fa951a870af792043d4b9649351b SHA-1: 106e33c80ab92bcf651d1721474baef591b3c3aa SHA-256: 41433a4cac6d0c493105049cf93c756ff7b4fbd9cd9d7124ee58732de4f2b2d9

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/431946152/win-free-robux-game-hack PDF link annotation
- https://sensorcamera-tw.com/upload/files/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/free-stolen-roblox-games-download_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/free-games-like-coin-master_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/how-do-you-hack-roblox-users_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/hack-coin-master-link_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/cheat-granny-roblox-2021_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/minecraft-login-free_GM479516143.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/roblox-mad-city-cheat-download_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/install-free-game-coin-master_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/roblox-cheat-mad-city_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_off00003064.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3064	22460 bytes
SHA-256: `f72e83815de4d7d89824e8d5541348d94c3c143f0c9e90b62fc51b4fdb6adc42`
`font_01_sfnt_off000062d2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62D2	19036 bytes
SHA-256: `866c875b7ada575fda7e0b2d16b4e3d455f2c28d19dc14b305271f934871ca62`

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