Malicious PDF — malware analysis report

Static analysis result for SHA-256 2243775cbcbe8a9e…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 01:44:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 002d9776ca3462642b940fc6b80179bc SHA-1: 1f8ced4882f8b6fd8bcefaa7e85097543c7315e4 SHA-256: 2243775cbcbe8a9ea5d96c0e43033231844c1c8905dd7fcef5dab936db5015ab
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 'free generator' or 'game hack' lures. The primary redirect URL is http://netcdn.co/app/431946152/genarate-free-robux-gift-card-game-hack, which is flagged as a known malicious redirector. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting potentially harmful sites.

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/genarate-free-robux-gift-card-game-hack In PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/pokemon-go-free-or-alolan-muk_GM1094591345.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-robux-2021-hack_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/hack-tycoon-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-red-wings-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-20219-robux-free_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/1-step-free-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-super-power-training-simulator-free-vip-server_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-noclip-on-roblox-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-update-2021_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_off0000319b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319B 22216 bytes
SHA-256: e9fd54e44284408a03454d92694ff6d810b56a255b639c038e462e82c23a09ce
font_01_sfnt_off000062f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F3 19112 bytes
SHA-256: 1160cf131db274805e68b7404a673d9b74ba8785ae64c268396f3d65055f0d6d

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