Malicious PDF — malware analysis report

Static analysis result for SHA-256 12032996021014d9…

MALICIOUS

PDF

48.3 KB Created: 2021-06-04 00:31:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d60af0009ca6533a57d91579f065148b SHA-1: 94233a06a39937330fb079dd4ec7135879babce9 SHA-256: 12032996021014d958ee50ede449073f193f043c53028e5aadba5234355cede3
200 Risk Score

Malware Insights

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

This PDF document employs a common lure, presenting itself as a 'free generator' for a game, which redirects to malicious infrastructure. The document also displays a fake CAPTCHA or human verification prompt, designed to trick users into interacting further, likely to download or execute a secondary payload. The primary malicious URL identified is https://netcdn.online/app/406889139/free-coins-on-coin-master-game-hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.online/app/406889139/free-coins-on-coin-master-game-hack In PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/rbx-earn_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/moon-active-games_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51AE 29104 bytes
SHA-256: 7e10b5d3eca057dd0a657d2f97ca337ed27e6bd6f0757d9166e9bcc5ba9f3c6a
font_01_sfnt_off0000919f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x919F 2920 bytes
SHA-256: 7866b010ce87c03010c9e9b3012247344950352db6dfa85c109f2de8769dafe0
font_02_sfnt_off00009bb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB9 17712 bytes
SHA-256: 6ea46f87f2167b805a87cbef3ad9b5ecf4d2513d7b8c5fe933be1d22f28e2546

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