Malicious PDF — malware analysis report

Static analysis result for SHA-256 0466e19820f21e41…

MALICIOUS

PDF

34.2 KB Created: 2021-06-28 07:29:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f887d25f33cef8394a313003f95058aa SHA-1: 29dbf33bb40cb09b98784d2edb924610b1f83503 SHA-256: 0466e19820f21e4175e197bf93d9723a6320803c75d89585527a3505f7c5fe21
200 Risk Score

Malware Insights

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

The PDF document contains multiple links to malicious redirectors, masquerading as 'free generators' or 'game hacks' for popular games. It also presents a fake CAPTCHA or human verification prompt to trick users into interacting with these malicious links. The primary link identified is http://netcdn.co/app/431946152/how-to-get-free-robux-2021-easy-game-hack, which is associated with known malicious redirector infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-robux-2021-easy-game-hack In PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/robux-free-fake_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-gear-roblox-script-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-sprinting-simulator-how-to-do-a-fast-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/como-tener-robux-gratis-sin-hacks_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/play-kill-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/fire-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-hacks-for-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/hack-file-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-roblox-character-editor_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/cheat-robux-2021-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/robux-gratis-hack-para-ordenador_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-hack-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/onnet-roblox-hack_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_off00002dcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DCF 22096 bytes
SHA-256: 8e7f16c16e14468738391a80ab8e96415a79954f0d1e699f0be9972efb47c1a8
font_01_sfnt_off00005ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED4 19568 bytes
SHA-256: 54573245d87bf425d09f38ae69d600f60ea89f6a8aa7cff0a6b46d42a5179ab9

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