PDF malware analysis — malicious · 373ed98b800477e9

MALICIOUS

PDF

14.9 KB Created: 2021-07-19 10:45:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 707059448bfb3476f61fa503d9b411f5 SHA-1: 45fd85cd25bc1ce1384b7ed79d4b6eac0d9aa256 SHA-256: 373ed98b800477e91e3116bbaac9b1295f4e562693d695f00c090c1f67fb5bde

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing indicating it links to a known malicious redirector infrastructure. The document body and embedded URLs also promote a "free Robux generator" lure, which is a common social engineering tactic. The primary IOC is the malicious redirector URL used in the lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9928

Heuristics 3

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.
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/claim-free-robux-game-hack In PDF document text
- https://www.academiaanticorrupcion.org/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.academiaanticorrupcion.org/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
- https://www.academiaanticorrupcion.org/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- https://www.academiaanticorrupcion.org/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
- https://www.academiaanticorrupcion.org/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.academiaanticorrupcion.org/images/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
- https://www.academiaanticorrupcion.org/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
- https://www.academiaanticorrupcion.org/images/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
- https://www.academiaanticorrupcion.org/images/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
- https://www.academiaanticorrupcion.org/images/free-minecraft-survival-server_GM479516143.pdfIn PDF document text

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PDF

Malware Insights

Machine Learning

Heuristics 3

Related samples 8