Malicious PDF — malware analysis report

Static analysis result for SHA-256 05a187eb9b103ea4…

MALICIOUS

PDF

41.5 KB Created: 2021-05-14 02:36:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3b04bf4f8f603b435511ac27590e2d73 SHA-1: 435e2556a39289e1d58c38f16af7f839d7b44b6c SHA-256: 05a187eb9b103ea44f4a8ee14db68b946522ad07a931731b385daa8f638915ce
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The embedded URLs, such as 'https://netcdn.xyz/app/406889139/coin-master-daily-free-spins-game-hack', are designed to trick users into downloading potentially malicious content or visiting further compromised sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-daily-free-spins-game-hack In PDF document text
    • http://picuruta.com.br/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://picuruta.com.br/images/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://picuruta.com.br/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://picuruta.com.br/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://picuruta.com.br/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://picuruta.com.br/images/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://picuruta.com.br/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://picuruta.com.br/images/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://picuruta.com.br/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://picuruta.com.br/images/roblox-g_GM431946152.pdfIn PDF document text
    • http://picuruta.com.br/images/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • http://picuruta.com.br/images/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://picuruta.com.br/images/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://picuruta.com.br/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://picuruta.com.br/images/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://picuruta.com.br/images/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://picuruta.com.br/images/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://picuruta.com.br/images/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • http://picuruta.com.br/images/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://picuruta.com.br/images/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47C4 24556 bytes
SHA-256: 943efadd82556d75dd9aa5ceec77c8e683c3fab844c63d3a52cd2e089272bf3c
font_01_sfnt_off00007fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FEA 18308 bytes
SHA-256: e42bde5f0ce420544e36e42831a39ceefa2103814e02a0c87b67b282abd28734

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