PDF malware analysis — malicious · 553f756c5b28569b

MALICIOUS

PDF

45.8 KB Created: 2021-06-03 07:34:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: fdac57ef974e6e69a94f8eb87935bf10 SHA-1: db4a1c79ad84cb8e8049f531985aeb575cb65b31 SHA-256: 553f756c5b28569befa7d7fec239074d4bc4e14f019bb8886906cf8f7e19cf62

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links and a heuristic firing indicating it's a 'free generator / game hack' lure. The document body, though partially garbled, also contains URLs related to game hacks. This suggests the primary purpose is to redirect users to potentially malicious websites for cheats or scams.

Machine Learning

Nyx PDF Classifier malicious score 0.9797

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.online/app/406889139/coin-master-free-coins-amp-game-hack PDF link annotation
- https://seltechutamamandiri.com/ckfinder/userfiles/files/robux-hack-me_GM431946152.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/robux-hack-tools_GM431946152.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/roblox-sexually_GM431946152.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/minecraft-modded-client_GM479516143.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
- https://seltechutamamandiri.com/ckfinder/userfiles/files/free-vip-server-roblox-pet-simulator_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_off0000502f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x502F	24132 bytes
SHA-256: `2d9a95b7132ec3ac5a6750e17fa770760911f18096419d6df11c870450634fef`
`font_01_sfnt_off00008715.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8715	2820 bytes
SHA-256: `96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689`
`font_02_sfnt_off000090b6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x90B6	18148 bytes
SHA-256: `db18fbf209d5c3ac4f8fb204b6e8efa0eed879a254f93b0188d52ff8b45533f5`

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