Malicious PDF — malware analysis report

Static analysis result for SHA-256 65524cc412c744d6…

MALICIOUS

PDF

33.9 KB Created: 2021-06-18 19:35:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: b700b2738e098528d44a1fcbdafb5691 SHA-1: 5f3ee352c284c9ab08eb8aa10ffee40cd6ad2999 SHA-256: 65524cc412c744d63c61187a08de2f87085e835117cbf935a303e3e13e0d822c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free currency generators. The primary lure is the promise of 'free robux' or 'coin master hacks', designed to trick users into clicking the malicious links. The document's structure and embedded URLs strongly indicate a phishing or scam attempt, likely delivered as a spearphishing attachment.

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/pastebin-roblox-hack-robux-2021-game-hack In PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-daily-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-scam-gui_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/robux-hack-thumbnail-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-team-change-script-pastebin-hacking_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_off00002d8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D8A 21732 bytes
SHA-256: 192c79d8b631dfab31428027aff79b4c8f28b5e2c3c631f835ffe5b7ce7f8904
font_01_sfnt_off00005d8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8D 19576 bytes
SHA-256: dd7de613b40f073b886b5f88641b798c74193c8fd6142c3ecdafa4c85ab060e6

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