Malicious PDF — malware analysis report

Static analysis result for SHA-256 26c2366ed6103603…

MALICIOUS

PDF

32.6 KB Created: 2021-07-06 08:31:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b30fbb0b9bd9d0be52bbaea2c343c2be SHA-1: eed46cb6a59628d43131a67adfa69073b87bd221 SHA-256: 26c2366ed6103603b4e9da90a767f7f7220afe45d772b430a8554d77b0136c49
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 0.9824

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.tw/app/431946152/free-robux-not-a-scam-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/how-to-get-free-robux-on-tablet-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/vesteria-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/competition-for-free-robux-no-lie-still-on_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/faces-on-roblox-that-cost-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spin-generator-without-human-verification_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_off000029dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29DC 21964 bytes
SHA-256: 2fbeafd9f52425877da4abc73299339483fd4edfb9849fdb45ec70d5db82e640
font_01_sfnt_off00005aa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA2 19080 bytes
SHA-256: 14e01471e6a07db1a68c511ee00ed8ed146bd69de2dd1952b6465b95f794ce32

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