PDF malware analysis — malicious · 59a6c09d6c4cd762

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 17:10:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23

MD5: f9c58bc5c9d2cc89757c3de27f87c365 SHA-1: 2a7ad2bbbc522b13008288e5e7f58a3c598bda39 SHA-256: 59a6c09d6c4cd76213012407f8a50d688c4d6f9e61860c79368e9d9bad615a58

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains multiple links that redirect to malicious infrastructure, impersonating the Facebook brand to lure users with promises of free game currency or hacks. The primary malicious URL identified is https://netcdn.online/app/406889139/free-coin-master-spins-link-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to exploit users through social engineering and redirection to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/free-coin-master-spins-link-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.online/app/406889139/free-coin-master-spins-link-game-hack In PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/actual-free-robux_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-robux-exe_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/robux-miner_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/how-to-free-tiktok-likes_GM835599320.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-robux-quiz_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
- https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-daily-spins-coin-master_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_004_off00005281.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5281	24956 bytes
SHA-256: `e44284a986fff6522fe449b117775a1766c16112a9efb267ee2aca8811c45db0`
`font_01_sfnt_off00008b23.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B23	18056 bytes
SHA-256: `3a13f115a00b8b7b194300b8b076c3bf70984f89fe406390bc378e2507b22e35`

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