PDF malware analysis — malicious · 2f5cf9d93ed662fb

MALICIOUS

PDF

35.1 KB Created: 2021-07-09 11:38:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12

MD5: ceb918d6c7491a603b4b5c214853f82c SHA-1: 0cac8b24875dce58af71fb081264bc0c4ee09e5e SHA-256: 2f5cf9d93ed662fbdace63fbf30004e4273acb5cdcb9e00d2e7c613659b62266

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it links to malicious redirector infrastructure, specifically advertising a 'free generator / game hack'. The embedded URL 'http://netcdn.tw/app/835599320/free-tiktok-comments-game-hack' is identified as a known malicious redirector. The document body also contains this URL and other links to similar-looking domains, suggesting a phishing or scam attempt to redirect users to potentially harmful content.

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/835599320/free-tiktok-comments-game-hack In PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/doctor-louie-roblox_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/how-to-hack-robux-on-computer_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/free-robux-rewards_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/roblox-bear-face-mask-free_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/all-anthro-roblox-free_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/free-logo-roblox_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/coin-master-links-2021_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/coin-master-app_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/krnl-download_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
- https://hackernoon.com/tiktok-In 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_off000036a5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x36A5	21900 bytes
SHA-256: `3165cd4811ba0ff685fd995bbf8a00ebe3e3f1f2f6e18af8a915cf95cd84395d`
`font_01_sfnt_off000066bb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66BB	18232 bytes
SHA-256: `e120f102f916e15f77850e37af923051ddd04191899a513836841ceac9f79054`

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