Malicious PDF — malware analysis report

Static analysis result for SHA-256 a666209142aa4a84…

MALICIOUS

PDF

35.2 KB Created: 2021-06-30 07:10:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 5783bc0e9b5a81345219d45c5e261a03 SHA-1: 2cf8637c22b72a47f052b51a926dc4ce9c5bac07 SHA-256: a666209142aa4a8482e217f9c4c41c1c18d68df83feca76d039820759519849c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, masquerading as game hacks and currency generators for popular games like Roblox and Coin Master. The document body explicitly contains the malicious URL http://netcdn.co/app/431946152/roblox-royale-high-free-glowing-beach-skirt-game-hack, which is also flagged by heuristics as a malicious redirector. This indicates a phishing or scam attempt designed to lead users to potentially harmful 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/roblox-royale-high-free-glowing-beach-skirt-game-hack In PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/get-free-robux-without-getting-apps_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/gainblox-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-powering-imagination-redeem-your-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-urbis-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-copying-and-pasting-easy_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/ice-cream-simulator-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-cursor-hack-lock_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/cheats-for-lumber-tycoon-2-on-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-team-change-script-pastebin-hacking_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/dll-injector-roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-hack-on-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/nonsense-diamond-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-no-survey_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_off000030b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B2 22624 bytes
SHA-256: b629b26a7fcf565b0108c8c59150086f178359300e18efb71e4d7030eca874bb
font_01_sfnt_off00006352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6352 19556 bytes
SHA-256: dd4939869861739c6f83acd23f0497f179a69bebdb011cc4910f5e8610b7a9c1

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