PDF malware analysis — malicious · 976a942d84a469c1

MALICIOUS

PDF

43.8 KB Created: 2021-05-14 15:31:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 8fd3ea84de1f4b1fbc82aed3e20f56d9 SHA-1: dd6bd33af8b0d0fceeab93269cecafbd3204a375 SHA-256: 976a942d84a469c1b8de545d922c89442321f9a5260a99036a21c67c9aef7677

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that impersonate 'Paypal' and lure users with 'free generator / game hack' content. These links redirect to known malicious infrastructure, suggesting an attempt to trick users into visiting a compromised site or downloading further malware. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or credential harvesting attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

Heuristics 5

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH

Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/roblox-free-executor-game-hack.
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
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.xyz/app/431946152/roblox-free-executor-game-hack In PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/_GM479516143.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/coin-master-hack-injection_GM406889139.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/coin-blogspot_GM406889139.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/download-hack-coin-master_GM406889139.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/robloxbux-us-generator_GM431946152.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/how-to-get-real-robux_GM431946152.pdfIn PDF document text
- https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/master-coin-free-link_GM406889139.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_003_off00004ce3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CE3	25764 bytes
SHA-256: `9a634edf035ff0240c09dffc3726cc0c3397c0d481f0005f9a6af9e0427b2ed3`
`font_01_sfnt_off0000894d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x894D	18192 bytes
SHA-256: `7ba247a64e9cc24d80440ed01eefe46d1337aad9cec78f28e7b2b5b32c9414c4`

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