Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c6467e9097c59f9…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 12:53:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 47baa840a03f692c3e535abdff4ef46a SHA-1: 1b2ded08211f4c288d17da19ed26fbb56975062c SHA-256: 6c6467e9097c59f9c7b832d452e316cf0a67d8570fbdb474755c09f1b195b61f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as offers for free game currency or hacks. The primary lure URL is http://netcdn.tw/app/431946152/free-robux-with-no-verification-game-hack. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful websites.

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.tw/app/431946152/free-robux-with-no-verification-game-hack In PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/hack-de-carpeta-atravesar-paredes-roblox_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/fnaf-roblox-free-items_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/roblox-protosmasher-free-downlaod_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/774-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/free-robux-website-glitch_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/roblox-cheat-engine-70-bypass-2021-rog_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/robux-script-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/boku-no-roblox-hack-script-buy_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/best-free-robux-sites_GM431946152.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_off00003281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3281 21656 bytes
SHA-256: 93f46cf0afb53f2545bc622939b4b37271f69c8482fee7820923336c1afc6ff0
font_01_sfnt_off00006238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6238 19436 bytes
SHA-256: 152779ac3709d5a43144f85cc286cfc78713a2961a87782e1bc06cce99e4fdaa

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