Malicious PDF — malware analysis report

Static analysis result for SHA-256 375957328ae9b9a0…

MALICIOUS

PDF

31.7 KB Created: 2021-07-05 12:30:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0b96fb94f1711e104e7aad16fad389f5 SHA-1: 5857622abfc1e32672d3e380e64fb212b9f27b50 SHA-256: 375957328ae9b9a0be9a84fe3e76f272de099a4c97e6e062428bfb107c69add1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free spins'. The primary malicious URL identified is http://netcdn.tw/app/406889139/hack-coin-master-free-spins-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to drive users to potentially harmful websites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/406889139/hack-coin-master-free-spins-game-hack In PDF document text
    • http://opac.stiesa.ac.id/repository/how-to-get-a-lot-of-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-hack-apk-july-2021_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/how-to-do-sword-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-roblox-gift-card-codes-2021-generator_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-project-pokemon-hack-2021_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/youtube-roblox-jailbreak-hacks_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-phantom-forces-hack-no-virus_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/pokemon-ultra-brick-bronze-roblox-free-shiny-eevee_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/games-cheat-engine-works-roblox_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3027 23384 bytes
SHA-256: 9e87b1dab616f72fab0c1062331e25abe23e5907f55b7925a1638723d25d8877

Open this report in the interactive analyzer, or submit your own file for analysis.