PDF malware analysis — malicious · 17f2f09ae36a5751

MALICIOUS

PDF

35.1 KB Created: 2021-07-03 12:05:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02

MD5: daaf1c77a8f5928a69e331af835351c3 SHA-1: 2cceb1863ae52a86faf3f97957b1b9e0778cefe6 SHA-256: 17f2f09ae36a575131f33989306ab79fb47411d7396881255dcd28e4473903bf

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a critical heuristic firing for a game hack lure, directing users to a known malicious redirector. The document body and embedded URLs reinforce this by advertising 'Coin Master Hack Apk' and related game cheats. This indicates a social engineering attack designed to trick users into downloading malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

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.
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 http://netcdn.tw/app/406889139/coin-master-hack-apk-iphone-game-hack In PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/how-to-hack-people-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/free-vip-server-roblox-anime-battlegrounds_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/free-robux-glitch-generator_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/free-roblox-gams_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/free-06-accounts-roblox_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/coin-master-game-hacking_GM406889139.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/888-robux-free_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/free-bc-roblox-android_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/free-printable-roblox-birthday-banner_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/robloxworld-pw-free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/hack-dungeon-quest-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/roblox-free-vip-gta-5_GM431946152.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_002_off000031bc.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x31BC	23416 bytes
SHA-256: `e3718626d679a83f5f9657de2333c1d18973ce03f52981c1e9a6390b2cb62816`
`font_01_sfnt_off00006668.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6668	18344 bytes
SHA-256: `48c41a6d06caede2bfe7c3afa9e405a795656508ab3dfdd406afe33248ac35d9`

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