Malicious PDF — malware analysis report

Static analysis result for SHA-256 1930b00ac64da465…

MALICIOUS

PDF

46.3 KB Created: 2021-05-14 17:54:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: da4ef5b60f1747ea4015c6d0496a9de1 SHA-1: 65ec45dcb584be3c13006899ea0642d27cb1acc9 SHA-256: 1930b00ac64da465843d3ebc3418bf139416e801590d879b068667a64938ff06
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'Coin Master Hack' and 'Roblox' related content. These links are designed to lure users into clicking, likely leading to further malicious sites or downloads. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9278

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-hack-spins-and-coins-unlimited-free-game-hack In PDF document text
    • http://kermas.eu/images/coin-master-strategy_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-co_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/roblox-rewards_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-free-spins-and-coins-daily-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e34.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E34 25304 bytes
SHA-256: f05ed3694b7de126b40636ffbb696047d4586ad15bef19f36eb6422cfa084c8c
font_01_sfnt_off0000876d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x876D 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off0000911f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x911F 18752 bytes
SHA-256: 9894c068b10d635aa02e8d25afb59d141e90fd875449b50e52c6a3fbfc43112a

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