Malicious PDF — malware analysis report

Static analysis result for SHA-256 2111733b1ce1d1c2…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 10:22:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 67a0eaed00afd8d30c0d16bb50a6ab1f SHA-1: c05ce6fb101986fb3ac9d78eb93092ec03125b92 SHA-256: 2111733b1ce1d1c245ee2d7fbae7fa79cbe3d3154ef332b2c423dd2761bef437
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.tw/app/406889139/coin-master-tiradas-gratis-link-game-hack PDF link annotation
    • http://digilib.akbidarrahma.ac.id/repository/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-games-stealing-free-models_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-death-sound-effect-free-download_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/hacks-for-roblox-high-school-2_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-speed-hack-jailbreak_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-robux-hack-2021_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
stream_002_off0000310f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x310F 23148 bytes
SHA-256: 31576fd0c10952564488eb5e9fbc19fcfac9c7d1d70d0df996373497af6fcd7c
font_01_sfnt_off000064f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F3 18180 bytes
SHA-256: eb709c113ba60c115f2b8b8b229b5927732780444a7a314d98a2d1fc1dd07480

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