Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bd5c5138396f215…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 16:00:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 4cd7d1f94b6a04a7dd1ce68b2dea401f SHA-1: f4f899ebd09acb3cdab89f7c1341cd1225095589 SHA-256: 8bd5c5138396f2157807b18103787a306646ca93893587d2820873316cda8b55
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The primary lure appears to be related to 'Coin Master' and 'Roblox' exploits. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

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/coin-master-game-hacking-game-hack In PDF document text
    • http://library.asih-husada.ac.id/repository/descargar-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-hack-an-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-mmc-zombies-project-cheats_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-100-real-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-connect-to-xo-s-hack-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-powering-imagination-redeem-your-free-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-buff-shirt-free_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/someone-has-hacked-into-my-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-cheat-money-android_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-to-wear-straw-hat-roblox_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-sex-cheat-code_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/boxing-simulator-roblox-infinite-strength-hack_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/hacks-for-roblox-pc_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/fiddler-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/robux-best_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-free-download-windows-7-64-bit_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/give-me-free-robux-now_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_off00003246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3246 22648 bytes
SHA-256: 254d097635e16770fbb5e53bf2b2d93f07cf003eb36ca06939c8660151fd2583
font_01_sfnt_off000064dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DD 18264 bytes
SHA-256: 2cce2bd7d0c34e42cbcfafb01eed0627e7eec2b35f394281c800f8d420957298

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