Malicious PDF — malware analysis report

Static analysis result for SHA-256 83841faf6cd8bf5f…

MALICIOUS

PDF

34.0 KB Created: 2021-06-28 18:33:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 14f4f16e17dc505b91baedec922e0a99 SHA-1: 3232d78269bf29ce202bbecd807954a2190ddf3a SHA-256: 83841faf6cd8bf5f95b93dd7827a6f5a716301978a22a978ccb1049055299f17
82 Risk Score

Malware Insights

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

This PDF document employs a common lure of 'free Robux' and game hacks to entice users. It contains numerous links, including a primary redirector at http://netcdn.co/app/431946152/ame-kit-how-to-earn-your-free-robux-game-hack, which likely leads to malicious content or further infection vectors. The ML classifier strongly supports the malicious nature of this PDF.

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/ame-kit-how-to-earn-your-free-robux-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/free-giftcard-codes-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/cheat-roblox-bad-business_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-without-paying-money-or-typing-password_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/como-quitar-no-soy-un-robot-en-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/descargar-hack-para-roblox-dragon-ball-rage_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/pubg-hack-uc-20219_GM1330123889.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/pokeballs-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-games-that-have-free-radio_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-games-set-up-for-roblox-studio_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/cheats-in-roblox-games_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_off00002d9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D9A 22120 bytes
SHA-256: bbb70c4ab58f0170823e73f8cd48abca088e0a9a86d1e24ee56d727d1b28568a
font_01_sfnt_off00005e49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E49 19524 bytes
SHA-256: 77be2576fa89aa03a33bbccce6edd276da71474264b09e8e67f503b8483d5087

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