Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc875f9e36cb178…

MALICIOUS

PDF

35.1 KB Created: 2021-07-03 13:33:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-05-30
MD5: 633e6df13152c90a93b2867066c1ccc6 SHA-1: 62fa49a1b387d78ad37937d184c8da95af48b18e SHA-256: 1dc875f9e36cb17856c06a1b134ac5c00aaa6eca9375f8b59d11218b758caa23
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-get-free-robux-no-verification-game-hack In PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-cheat-enginefor-rodebix_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/rocash-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-injectors-free_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-hacker-report-system_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-com-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/coin-master-free-spin-reward-links_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
font_00_sfnt_off00003253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3253 22340 bytes
SHA-256: f8a381a3fd3e81e15a9c60dc43c596360574471bd6db2081546ad0344ee92b92
font_01_sfnt_off000063b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B5 19240 bytes
SHA-256: 7000039a4416ac0135e90d34ca5c89af1b7d80dfbac1969cb80e33a7c999222c

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