Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f8beb41fd72efaf…

MALICIOUS

PDF

32.8 KB Created: 2021-07-19 11:17:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 61700f775d1d7997149e3f2d7897d7a8 SHA-1: 6cccd4ecc37046c0b3b74108d1dd3bd67b3a9274 SHA-256: 4f8beb41fd72efaf4902a275b3c22aa191a5257e9dcf817effff25e98e6c8f6d
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 0.9548

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/479516143/minecraft-java-edition-free-game-hack PDF link annotation
    • https://de-licht.com/image/data/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-free-spins-link-2021-today_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_off00002c3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3F 22788 bytes
SHA-256: 7b2f32435caf22bfc583abbaa25a9560ca8fef7024002c43d25426f49ebb3cd1
font_01_sfnt_off00005ef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF4 18164 bytes
SHA-256: e28d0ded599416f75746d42b4ddd49ac4ed584cd54835945167b34c6d366202b

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