Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ea7676133fdfa44…

MALICIOUS

PDF

34.8 KB Created: 2021-06-19 16:02:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 0e8b22aaa0b7b6938b8d31b8fd00ed90 SHA-1: 2dc11298129470d7391da6f884ca8b1166b74691 SHA-256: 5ea7676133fdfa444e926ba3d4092ed0cec3a25d432476a97ff71fc4d6eab005
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The primary lure URL is http://netcdn.co/app/431946152/roblox-gun-game-hacks-game-hack, which is flagged as a malicious redirector. The document body and heuristics indicate a social engineering tactic to trick users into visiting these sites, likely leading to further malware downloads or scams.

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/roblox-gun-game-hacks-game-hack In PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-roblox-vip-super-power-training-sim-servers_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-bird-simulator-hack-script_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/logiciel-de-hack-roblox-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-do-you-get-free-money-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-retrieve-your-hack-roblox-account-without-email_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-car-simulator-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/game-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/auto-clicker-for-roblox-mac-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/hack-roblox-retail-tycoon-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-hack-roblox-bee-swarm-simulator_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-high-school-2-hacks_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/hack-mot-de-passe-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-hack-com_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
font_00_sfnt_off00002ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF7 23124 bytes
SHA-256: f9f31780c6a5adc9698fa7172cbaaa885f278e999133899120aa8ee6b81040af
font_01_sfnt_off00006314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6314 19056 bytes
SHA-256: 34c1c422748116c53609ec7eadc1d9a517300750bc3a469528db49b04bde325c

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