PDF malware analysis — malicious · 2d97ac10dfb77524

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 05:16:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 21a8bacb8f18a48960ba0a0a2646d69e SHA-1: 2454c827cf2172ec729a0828e3eb58da560dab94 SHA-256: 2d97ac10dfb77524bca23bc0c29d79b06482c2dd6c8ebcc15b2944ccaed9224b

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/free-promocodes-roblox-body-game-hack PDF link annotation
- https://bookswithapast.com/ckfinder/userfiles/files/roblox-hack-robux-and-tix-no-download-no-survey_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/robux-free-legalement_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/earn-gg-free-robux_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/tiktok-free-wallpapers_GM835599320.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/roblox-recover-hacked-account_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/hack-coin-master-download_GM406889139.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/free-robux-real_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/pubg-uc-official-center_GM1330123889.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/free-robux-with-gift-card_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/how-to-hack-into-an-account-on-roblox_GM431946152.pdfIn PDF document text
- https://www.roblox.com/my/tasksIn 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_off000031f5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31F5	22744 bytes
SHA-256: `97fa017a19ab1aa10b6cb0d9935edbd7d8150513eaacb6427936c1556d324652`
`font_01_sfnt_off000064eb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64EB	19232 bytes
SHA-256: `032ac5f2066b1a90995dfaa1255d73c19c296c1855ca459f4892519ae12b7445`

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