Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cf19c4e3f23fd40…

MALICIOUS

PDF

41.6 KB Created: 2021-05-16 08:58:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a5fa2b1cca919e54fbb27d58f6adc5e8 SHA-1: d04fd2297b6ca8f1e0b90460135b60216889a451 SHA-256: 6cf19c4e3f23fd40e9cbd58cc674f8555b3c9cb1abbc3ebce4c6b6cc0bdda854
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and further malicious PDFs, masquerading as game-related generators or hacks. The document body, though partially corrupted, contains text and URLs that reinforce the lure of free game items. The embedded URLs are designed to lead the user to download more malicious content, likely to further compromise the user's system.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/free-minecraft-gift-codes-game-hack In PDF document text
    • http://eltisstudio.sk/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/games-for-robux_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-free-spins-and-free-coins_GM406889139.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_off000049b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49B2 24680 bytes
SHA-256: db1721cf898a6a579774c66099ae2e710b95f749fa6cfe7c53c6207540637140
font_01_sfnt_off00008160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8160 17884 bytes
SHA-256: 7ec61a924c6d9821aca9f66af1070d56701b2b51a1f7faab5d7237cf03dbe1ad

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