Malicious PDF — malware analysis report

Static analysis result for SHA-256 386fcc33480ce858…

MALICIOUS

PDF

33.8 KB Created: 2021-06-27 02:50:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 6cc8ce2d9847e9fe68732e1513b2a543 SHA-1: cac206da814db45ea5ca9abb756402d9510d8a69 SHA-256: 386fcc33480ce858afdc72281efcc4719850e4c1cfab4ca5896dd1afdc99d6f6
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/431946152/1m-robux-cheat-game-hack PDF link annotation
    • http://perpus.masda.ac.id//repository/robux-redeem_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-codes-for-free-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-hecku_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hero-havoc-hack-pastebin-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/the-only-free-robux-game-that-works-1_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/redline-hack-roblox-download_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-clothes-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-spin-and-coins-free_GM406889139.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_off00002ca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA6 22440 bytes
SHA-256: 962e226abd472ed65d6add8582ac7ea5bdd7ab4885841046e7eaaf34e699ebc0
font_01_sfnt_off00005eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB1 19188 bytes
SHA-256: 4c31022b7c905cedcd3512ad46921f1fdd708f3e8e95daa22e32e2b95ba46cdb

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