PDF malware analysis — malicious · 1ffd5430c1a33487

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 20:51:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 6bcc58ebfd07408a62715033bb3d9ee0 SHA-1: 1cc58630ca67c94068d1121da17fb8235cc10e46 SHA-256: 1ffd5430c1a334876a60e2f1dba0bf8fd816db36ac714df777a20afc5b19aac7

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 0.9865

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/431946152/lazyblocks-com-robux-game-hack PDF link annotation
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/roblox-lovenet_GM431946152.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/free-roblox-passwords_GM431946152.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/minecraft-free-android_GM479516143.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/roblox-verification_GM431946152.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/hack-lua-script-for-one-peace-opn-seas-roblox_GM431946152.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
- https://www.denpasarinstitute.com/new/public/ckfinder/userfiles/files/minecraft-pe-apk-free-download_GM479516143.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_off00005150.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5150	24852 bytes
SHA-256: `eb2f3ed02748bc86e19ae8af8b14aa0bc713630da8bf1706dd5d4a5b1c17e357`
`font_01_sfnt_off00008a76.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A76	18844 bytes
SHA-256: `639e5ac620987a890dc2290d0ce77fbe17994151dd0929aad8f87d767cce42ff`

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