PDF malware analysis — malicious · b7178a1e11c60b9c

MALICIOUS

PDF

32.4 KB Created: 2021-07-24 06:00:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23

MD5: f0865b6650a9b71235f5dd74f953f52d SHA-1: 3a114bf3eef65edd4e88f0b005767ad0a518be0e SHA-256: b7178a1e11c60b9ceb522851e5afafae2611cdc9f972085c1688df0cd487665b

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising 'free generators' and 'game hacks' for popular games like Roblox and Minecraft. The document body also contains a call-to-action phrase, 'CLICK HERE TO ACCESS ROBUX GENERATOR', further reinforcing the social engineering lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful content or phishing sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9900

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/431946152/roblox-speed-hack-game-hack In PDF document text
- http://genialica.de/images/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
- http://genialica.de/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
- http://genialica.de/images/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
- http://genialica.de/images/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
- http://genialica.de/images/minecraft-iphone-free_GM479516143.pdfIn PDF document text
- http://genialica.de/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
- http://genialica.de/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
- http://genialica.de/images/free-tiktok-accounts_GM835599320.pdfIn PDF document text
- http://genialica.de/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
- http://genialica.de/images/is-tiktok-free_GM835599320.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_off00002983.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2983	22320 bytes
SHA-256: `2c6f576c07a25725558380deb09dea218239e06aba88c05145e765ff2dbcd15e`
`font_01_sfnt_off00005b08.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B08	18716 bytes
SHA-256: `25137fd7aa4ae55fccfc2bf95df03fd14249c0cb6961e1d1bb22478a3866a6f2`

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