Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb4c8f89d623546…

MALICIOUS

PDF

34.4 KB Created: 2021-06-27 22:42:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: d4d0726a04c3386a7130b453990b4db4 SHA-1: c83dc0270c84ad0047ff11699d4f166e1593125b SHA-256: edb4c8f89d623546cac259702139559669d1865c5517160393f882ed4a41dc0f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as free game hacks and generators. The document body explicitly mentions 'how-to-get-ninja-animation-for-free-roblox-game-hack' and directs users to 'http://netcdn.co/app/431946152/how-to-get-ninja-animation-for-free-roblox-game-hack'. This indicates a phishing or scam attempt designed to lead users to potentially harmful websites. No scripts were extracted, but the presence of malicious links and the lure content strongly suggest a phishing or scam campaign.

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.co/app/431946152/how-to-get-ninja-animation-for-free-roblox-game-hack In PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-free-like-bots_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-become-a-speed-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/hack-roba-cuentas-de-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/robux-game_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-20-download-free_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/groups-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF0 22492 bytes
SHA-256: 87e1811f2238fab23717f877aa70c0bfcd4bf3fbaed08e3d06248d6551d9d324
font_01_sfnt_off0000601c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601C 19484 bytes
SHA-256: 89375fc8f6664890887302906d8756a8d0fc6c1f5736110cfd4da5ba74903002

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