Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fb0a97e80300011…

MALICIOUS

PDF

49.6 KB Created: 2021-05-14 12:31:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b8322b1e577d4541a163915180350476 SHA-1: d598fb5032d509dd0a8efdb15d4485964a53c519 SHA-256: 1fb0a97e803000115ca1b1546f979c9fca1e90711c785b909854a079f5db6028
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'Coin Master' game hacks. The ML classifier also flagged the PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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-free-link-today-game-hack In PDF document text
    • http://nationshield.ae/userfiles/files/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/what-is-a-robux_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-coin-spin-daily-link-net_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/roblox-imagine_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-robux-no-email_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a1a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A1A 24164 bytes
SHA-256: 0dab6f9d45b31d4e1eb71581a25fd0d39c24fe3ac03da7166968105c22169cc5
font_01_sfnt_off00008132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8132 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off00008acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACD 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_03_sfnt_off00009f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F58 18232 bytes
SHA-256: ac7637c34b6ea6a17139aeea995219f6842183aaecfc204fce9d36f337c74847

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