Malicious PDF — malware analysis report

Static analysis result for SHA-256 df9f45b2eb1d781f…

MALICIOUS

PDF

33.8 KB Created: 2021-06-19 10:23:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ad17e09b5d6a6fdf3d5c2381812baae6 SHA-1: 69e6f6ff6fb08e6db47e38e2ee0166da73968b81 SHA-256: df9f45b2eb1d781ffa4e4368cd65208abfc9938a942b90222ee207a4335aa4fd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that promise game hacks and free in-game currency for popular games like Roblox and Coin Master. The heuristic firings, particularly 'PDF_GAME_HACK_REDIRECT_LURE', confirm the malicious intent of redirecting users to potentially harmful sites. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the document's structure and embedded links are designed to trick users into clicking through to malicious external resources.

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.co/app/431946152/how-hack-a-roblox-account-game-hack PDF link annotation
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-how-to-hack-to-get-followes_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/pinapple-outfit-hack-roblox-royale-high_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-givway_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/minecraft-free-education_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-com-www_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-clothing-items-on-roblox-xbox-one_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-no-offers-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/2021-free-spins-on-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_off00002ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA6 21836 bytes
SHA-256: 8bc2ec2d1457648ef17920e92644ff94af149e635ffb627afdb65fb9c3686753
font_01_sfnt_off00005eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB3 19064 bytes
SHA-256: 776a69341cf024242d706559cca6ee5019837a7e5a0e8c0117088c91905d8b78

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