Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c1f2b7d60f795f4…

MALICIOUS

PDF

33.3 KB Created: 2021-07-03 11:28:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 4fb47f61a8771b2e62d0f9e3e2c53d49 SHA-1: c7bc37c239ff32c7a393c8a8b0bb248518ed73ef SHA-256: 6c1f2b7d60f795f4d9be5d7326c8483fc1d083d8dc6ded45798d103ff0650b94
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to malicious infrastructure, masquerading as game hacks and generators. The heuristic firings indicate the PDF links to known malicious redirectors and employs a lure for free game items. While no scripts were extracted, 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/free-coin-master-s-game-hack In PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-robux-without-using-personal-information_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-robux-on-your-computer_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/pubg-uc-4all-cool_GM1330123889.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-roblox-redeem-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/jailbreak-beta-roblox-hack-dll_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/inject-hack-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/mcpe-client_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-no-human-verification-mobile_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/tiktok-free-now_GM835599320.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_off00002dc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC1 22624 bytes
SHA-256: 5ca0a11695bf1085e473ec9724ea20470a667698f97cb42dfd2196e26a8b6bd0
font_01_sfnt_off0000603a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x603A 17996 bytes
SHA-256: e73ad1949997423a3d5b1ae8c404e3daaf550eb6d6e5d8735e8b2899a6b2b9df

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