Malicious PDF — malware analysis report

Static analysis result for SHA-256 0be5ea3adb522c95…

MALICIOUS

PDF

36.4 KB Created: 2021-07-04 22:57:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7aba2d68e0663fa62f2d0ea23a0a9e88 SHA-1: cc61c3e1dc65286b5ac6ea0eafd38b925cf5bd97 SHA-256: 0be5ea3adb522c95d2010bb3955159f17a760924b867c3ea6d0988d23054845e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure related to 'free spins and coins for Coin Master game hack' and includes an external URI pointing to a suspicious URL. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a visual download button further supports the malicious intent of directing users to download content from the provided URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/free-spins-and-coins-for-coin-master-game-hack In PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-get-free-robux-in-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-roblox-accounts-today_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-car-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-hack-in-robux-easy_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/robux-hack-club_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/hack-electric-state-darkrp-beta-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/pokemon-ultra-brick-bronze-roblox-free-shiny-umbreon_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/tamper-monkey-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/dll-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-hack-roblox-to-get-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-hack-generator-no-human-verification_GM431946152.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_off0000375c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x375C 23228 bytes
SHA-256: 943bffd2ef5f8cef634cc4c0f854dbffe06cc58ae646cd1bb8101542c94eab52
font_01_sfnt_off00006baa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAA 18348 bytes
SHA-256: e3514f5c13c59f74fe131b320bb4a7a21799b0fccf5b53c141d50f68870e844d

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