Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d2079edf030b131…

MALICIOUS

PDF

35.8 KB Created: 2021-07-05 19:17:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 14f8aae358cb6c0bff833a9a3f9dafcd SHA-1: a67482b6f5ec8b3d9d5a42d37f3d4d68d5f7a8cc SHA-256: 8d2079edf030b13168c90c778a8ed2b80b47cf4c952074cca033a16031b1cee5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appear to be game hack or free currency generators. The primary link, http://netcdn.tw/app/406889139/coin-master-20-free-spins-link-2021-game-hack, is identified as a malicious redirector. The document body and embedded links suggest a social engineering tactic to drive traffic to potentially malicious 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-20-free-spins-link-2021-game-hack In PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-legit-no-groups_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-hack-using-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-roblox-mobile-android_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/www-roblox-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-do-you-get-free-robux-on-roblox-android_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/tc3-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hexus-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-audio-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/natevang-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-no-test-or-dowmload_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
stream_002_off00003329.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3329 23272 bytes
SHA-256: f498d9a9e985ea67ea8c1a2182a1a58cb1cd8e30ed0608357debf744bc93a1c4
font_01_sfnt_off000067ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67BA 18748 bytes
SHA-256: 2fa519299f8a2165e5faef35be9d47acb7f717a213bb0fe22b3fbdc2136af6a5

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