Malicious PDF — malware analysis report

Static analysis result for SHA-256 259f8760ffd6d1c5…

MALICIOUS

PDF

57.7 KB Created: 2021-05-10 20:08:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c58a6d13e6aa7c5bd7c251b453d11983 SHA-1: 81431d0e98c30df9752b5c04c244997fd266a5ac SHA-256: 259f8760ffd6d1c511d9f61ce6a996413a9c24fb293437f11fab6165ddeddd19
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free game hacks' and embeds multiple URLs pointing to similar content. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a social engineering attempt to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it acts as a dropper or redirector for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6331

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 https://netcdn.xyz/app/431946152/free-roblox-website-game-hack PDF link annotation
    • http://www.ladillo.com/images/robux-miner_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/rbx-website_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://www.ladillo.com/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.ladillo.com/images/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004232.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4232 33232 bytes
SHA-256: e2c5bc4fce3301e9f294ded88afb80ef1d735dc18b8b0f90adedc4fcc7d61b64
font_01_sfnt_off00008eb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB2 8252 bytes
SHA-256: 7ebedd6b182173c8e55836cb0d114b2c4a0ac85c96a51b9f0706c935f8415fea
font_02_sfnt_off0000a9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9C1 7448 bytes
SHA-256: a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90
font_03_sfnt_off0000bba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBA4 19852 bytes
SHA-256: a7e6b11532b58bfc05cdeb371ad7be22518065efaf152125b3f66866d6848c10

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