Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e37b723cc58891d…

MALICIOUS

PDF

51.4 KB Created: 2021-05-20 01:11:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 052a70eb301d53bcfcc885b0d534d2d4 SHA-1: f78377e5838b1275425b604e9da2e6d6f9479d42 SHA-256: 6e37b723cc58891dd2ac25cfff24814dbf9c16118b66f0594ac8a16c1d5e9900
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' and game hacks. The ML classifier also flagged this PDF as malicious. The primary lure appears to be a fake generator or hack, leading users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9348

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/431946152/free-robux-com-real-game-hack In PDF document text
    • http://nationshield.ae/userfiles/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/simplysarc_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-get-free-spins_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-robux-codes-generator-no-verification_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c24.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C24 26824 bytes
SHA-256: 479da677d29303bf00ae2c571e2e1348c331263cc56fc87f1f9292beae91d263
font_01_sfnt_off00008b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B23 8420 bytes
SHA-256: a15878a4f3dadcb1b86e54d9fa7cc2e920f1af216857d8c345cc6115cbcc2535
font_02_sfnt_off0000a61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA61E 18576 bytes
SHA-256: a83edd52c2be056a67ce389c2e3103e44ea5f6bc4cdf4c28a35d8553f09f80ba

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