PDF malware analysis — malicious · 3adeeaa919d25c81

MALICIOUS

PDF

32.6 KB Created: 2021-07-19 12:04:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 377621f646b73d09c1d4bf4b8fbedd8a SHA-1: f1b8c8998cb2709b7d401c3d92d92c80cdf7f453 SHA-256: 3adeeaa919d25c813de81d8a4d46edb37d059c522607d1f1b8f43d990652c8fe

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/835599320/free-likes-for-tiktok-game-hack. This redirector is part of a lure for "free generator / game hack" content, which is a common pretext for delivering malware or conducting scams. The ML classifier also strongly indicated maliciousness.

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/835599320/free-likes-for-tiktok-game-hack In PDF document text
- http://www.occquimica.com.br/images/is-minecraft-free_GM479516143.pdfIn PDF document text
- http://www.occquimica.com.br/images/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
- http://www.occquimica.com.br/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
- http://www.occquimica.com.br/images/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
- http://www.occquimica.com.br/images/free-tiktok-followers-no-downloads_GM835599320.pdfIn PDF document text
- http://www.occquimica.com.br/images/freer-tiktok_GM835599320.pdfIn PDF document text
- http://www.occquimica.com.br/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
- http://www.occquimica.com.br/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
- http://www.occquimica.com.br/images/roblox-speed-hack_GM431946152.pdfIn PDF document text
- http://www.occquimica.com.br/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.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_off00002d7c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D7C	22620 bytes
SHA-256: `b5fe09bd984cb0989bb36db41d329783aa79640bc29f044461f6080f1e53230e`
`font_01_sfnt_off00005fd7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FD7	17456 bytes
SHA-256: `308920fe04ba02bee84e9df39862d70534e91875b9399095fdfb0b81d81483e5`

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