Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4e6777c3fffb1c6…

MALICIOUS

PDF

44.5 KB Created: 2021-05-17 03:31:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d0d8fb81da34cd5a89d64322a15a04c6 SHA-1: 51e49f0d8bd245a98993a308d49e74e182d61ad1 SHA-256: f4e6777c3fffb1c6cdf04cdf9f80377a0736f71a52986ce0c38cfdf892a030dd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that are flagged as malicious redirectors, specifically promoting 'game hacks' and 'free spins'. The document body and embedded URLs suggest a lure to trick users into visiting these sites, which likely serve as a gateway to further malicious content or exploits. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/free-daily-spins-from-coin-master-game-hack In PDF document text
    • http://baxtton.com/sites/default/files/files/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://baxtton.com/sites/default/files/files/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004956.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4956 24264 bytes
SHA-256: 185a0de0b02144c110b7903e7c73705e09c9c48db84663b707a2b0f0d3185c90
font_01_sfnt_off000080cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80CC 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008a7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7D 18568 bytes
SHA-256: 83a1403c7ea81f16df60b15bd3ed63af058033cc9f39ccf30f75695a9a8bc87e

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