PDF malware analysis — malicious · a89b571c3c58d968

MALICIOUS

PDF

44.1 KB Created: 2021-05-15 15:03:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 0a8d14d3808a97a2ca6e9de7317bcc4c SHA-1: 6a2b73b474acfad9c07850a52b59470407720377 SHA-256: a89b571c3c58d9687952da734feacddc52c3de343a2869ccaeb99e729e4a0172

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a lure for a 'game hack' which redirects to malicious infrastructure, as indicated by the PDF_GAME_HACK_REDIRECT_LURE and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The document also instructs the user to copy and paste content into a shell, suggesting an attempt to trick the user into executing commands. While no scripts were explicitly extracted, the nature of the lure and the embedded URLs point towards a phishing or social engineering attack designed to lead the user to download or execute further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9976

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.
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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/479516143/how-to-download-minecraft-for-free-game-hack In PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/hack-master-coin-pc_GM406889139.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/robux-miner_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/earn-robux_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-safe_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_off00004fa8.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FA8	26036 bytes
SHA-256: `35ce3e0989e7d0e2e09703a485ac2e2c4ecf323dc0e0fa500647d561ee45d450`
`font_01_sfnt_off00008a49.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A49	18292 bytes
SHA-256: `99621570461cd7d06d3aeee2d5a7201c5e27378a0102ff29a57c60fd25da4758`

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