Malicious PDF — malware analysis report

Static analysis result for SHA-256 d26defebe86d7e68…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 14:00:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: eacf6f7735733deea41d619cccc223e6 SHA-1: cf9980467e6607f1b586a35a385d5da80e056bd4 SHA-256: d26defebe86d7e68cbe0c7e59c07f2a02eff55b14018b7024536a8f9c8b84c7d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to 'free Robux' and game hacks to entice users to click on embedded links. The primary malicious URL identified is http://netcdn.tw/app/431946152/roblox-free-robux-no-human-verification-game-hack, which likely leads to a malicious payload or phishing page. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a social engineering attack aimed at users seeking game advantages.

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/431946152/roblox-free-robux-no-human-verification-game-hack PDF link annotation
    • http://samavetpharm.com/userfiles/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/pgsharp-pokemon-go-free-key_GM1094591345.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/claim-free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/cowboy-t-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-rape_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-live_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/tiktok-free-trial_GM835599320.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-hack-roblox-s3x-admin-and-more_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-games-roblox-games_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-how-to-get-in-bloxburg-for-free-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/hack-my-spins-coin-master_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_off00002fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCA 21808 bytes
SHA-256: 7acd411d150facd7a0ec48b640d2747fe1b640519d6a49f31144ce656695e0f5
font_01_sfnt_off00005fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCB 19408 bytes
SHA-256: d2ef309b92771ae7bb099a6b634574daefb8445dd777fce633f2a8c245e3903e

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