Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff73668603f97b33…

MALICIOUS

PDF

44.1 KB Created: 2021-05-14 09:39:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f1a7455db24b069415aae4a53480c2cc SHA-1: 094ae43e6359375b86532403c0157d371faf56d8 SHA-256: ff73668603f97b338bc2ef95498d2b954d15512097f09cdaafaea4c673df2399
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising game hacks and generators. The ML classifier strongly indicates maliciousness, and the presence of multiple redirector links suggests a phishing or scam attempt. No scripts were extracted, but the document's structure and embedded URLs point towards a lure designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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/rape-simulator-game-hack In PDF document text
    • https://ethraa.ae/userfiles/files/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-coins-and-spins-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/oprewards-login_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/spin-and-coin_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49BC 28432 bytes
SHA-256: 9e1c0899c40aa72b6e10873a75cddeafa7ecd504d4daa440c1b18b80d3246008
font_01_sfnt_off000089bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89BF 18444 bytes
SHA-256: b480e4b898178c1e4e39aef83c0e1788f84f3d88de6057dcc401cfae57224147

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