Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d34509a2c42df52…

MALICIOUS

PDF

47.7 KB Created: 2021-06-08 22:43:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6c06d064ffa966f41093e9c8f87641bd SHA-1: ad075763763a8b9f0d6dc143ad98aed422458dc1 SHA-256: 4d34509a2c42df520ef442869043ed9464d66fe4fb01b968d71a0f2c68f569ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, disguised as game hacks. The primary lure is a link to 'how-to-delete-a-hack-in-roblox-game-hack', which is a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristics indicate a malicious redirection workflow designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/how-to-delete-a-hack-in-roblox-game-hack In PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coinmaster-links_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-tiktok-fans-5k_GM835599320.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-robux-codes-no-verification_GM431946152.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_004_off0000525f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x525F 26192 bytes
SHA-256: 30f036b535700a812b5ee5e2c6b2d17a62ec72b003877bd4bd9dc056c3a4bcc3
font_01_sfnt_off00008cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD5 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00009684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9684 18616 bytes
SHA-256: e7c818fa78a7fe9a733354a2ebe817c2c1fb82fd1f42e13ba78280894f466291

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