PDF malware analysis — malicious · 946c0c0425a1bead

MALICIOUS

PDF

33.5 KB Created: 2021-07-19 22:40:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24

MD5: cb8ae74529f715e5663ecc523ff7b723 SHA-1: 9b59a3bca18b2b8a1cf2e53ccdc4c92033cd7fa8 SHA-256: 946c0c0425a1bead09caa8f531f929748ac830e760821f0a677175081e8babab

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to known malicious redirectors, masquerading as free game hacks and generators. The document body, though heavily obfuscated, contains references to 'Minecraft Java Edition Free' and a 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' call to action, reinforcing the lure. The primary heuristic firings indicate that the PDF is designed to redirect users to malicious infrastructure, likely to download further malware or engage in phishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9942

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/479516143/minecraft-java-edition-free-game-hack In PDF document text
- http://grazzio.ru/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
- http://grazzio.ru/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
- http://grazzio.ru/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- http://grazzio.ru/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- http://grazzio.ru/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
- http://grazzio.ru/images/roblox-speed-hack_GM431946152.pdfIn PDF document text
- http://grazzio.ru/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
- http://grazzio.ru/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
- http://grazzio.ru/images/free-robux-come_GM431946152.pdfIn PDF document text
- http://grazzio.ru/images/roblox-free-robux-hack_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
`font_00_sfnt_off0000307b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x307B	22064 bytes
SHA-256: `53bb9f72163aa329c1351d71b9cf18a86ad170bfeffaa1108366476e0166b840`
`font_01_sfnt_off00006131.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6131	18164 bytes
SHA-256: `e28d0ded599416f75746d42b4ddd49ac4ed584cd54835945167b34c6d366202b`

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