Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d040341d00c505d…

MALICIOUS

PDF

34.1 KB Created: 2021-06-18 15:50:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 7a1bdd2e58c4208478f768bf0ad1d7a7 SHA-1: a0ff4719b2d34c37790b7936485ed1f9755b3d7e SHA-256: 7d040341d00c505d05585962361cd431e3c3eb72e0fa4ad07694e8262b6ecf2c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to redirector domains, including one explicitly identified as malicious. The document body and extracted URLs suggest a lure for game-related cheats and currency, aiming to deceive users into visiting potentially harmful sites. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/set-you-free-roblox-id-game-hack In PDF document text
    • http://rainbowbuddha.academy/images/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/tiktok-free-folowers-4tiktok-site_GM835599320.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/how-to-play-games-that-cost-robux-for-free_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/freer-tiktok_GM835599320.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/minecraft-client-download_GM479516143.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/roblox-ftw_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/how-to-hack-roblox-accounts-with-a-url_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000305e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x305E 21628 bytes
SHA-256: 7213e984ad19df2b8c6242a4aa4279525b976a0db877ddd7633233cd1dbe0771
font_01_sfnt_off00006004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6004 19044 bytes
SHA-256: 1f4339302faff0863dfdcb86c8fe7bb21e370d07945c46d576b0ba826159c409

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