Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4b93c811aa84ba4…

MALICIOUS

PDF

34.1 KB Created: 2021-06-26 08:19:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 178158b93c7c8e91b917beb3a1524491 SHA-1: 0301be74d454eaba61f93a7bc509d057ee08b178 SHA-256: a4b93c811aa84ba46be4891f566847ab4b96ca8ada94ce637dc6c1487c10bf80
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/nuevo-hack-de-robux-game-hack PDF link annotation
    • http://library.stiks-tarakanita.ac.id/repository/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/game-guardian-roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-do-i-hack-linkmon99-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-stop-roblox-from-crashing-when-hacking_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-the-guy-who-hacked-the-admin-panel_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/get-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-sans-verification_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-snow-shoveling-simulator-free-santa-bag-ijf_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_off00002efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFB 22120 bytes
SHA-256: 5f15fa4a7f3b4ee8b50ff6c2a1c53e8d92850802dbbb22ea0e5ab5b8dd9515d7
font_01_sfnt_off0000601f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601F 19004 bytes
SHA-256: 80fab4be621a3744efe1e4da1b833fc06ab795571462bc214c723ed895be097f

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