PDF malware analysis — malicious · 5e684b90eeff51f1

MALICIOUS

PDF

32.6 KB Created: 2021-07-19 18:01:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: a50e620e6d20d51182c5e1c893c7b6e3 SHA-1: d3ba485e1e7f280547c34887e192ae69e6bfe2fb SHA-256: 5e684b90eeff51f10d76a6d50bfc8bab69022d97a0ec5148332e8f64168dc839

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a critical link to a known malicious redirector at http://netcdn.tw/app/835599320/free-views-tiktok-game-hack. The document body and embedded links suggest a lure for "free views" or "game hacks" to entice users to click, which is a common social engineering tactic. The ML classifier also strongly flagged this PDF as malicious.

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-views-tiktok-game-hack In PDF document text
- https://www.cosmosdawn.net/images/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
- https://www.cosmosdawn.net/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
- http://cosmosdawn.net/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
- https://www.cosmosdawn.net/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
- https://cosmosdawn.net/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
- https://www.cosmosdawn.net/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
- https://cosmosdawn.net/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
- https://www.cosmosdawn.net/images/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
- https://cosmosdawn.net/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
- https://cosmosdawn.net/images/coin-master-free-spins-link-2021-today_GM406889139.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_off00002be3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2BE3	22884 bytes
SHA-256: `38b4d9d93aa31bc68a4f279d740d1e29b816a4b9f06c2faa74f19041d33616b7`
`font_01_sfnt_off00005f06.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F06	17752 bytes
SHA-256: `ce4f969b492885a6292b68f2810015e61170a5a05df2656d5db0dd0870788c0b`

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