Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eed378d129b1a46…

MALICIOUS

PDF

45.4 KB Created: 2021-06-08 18:43:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 2f7a68be6915188a0988cb33f8cbc926 SHA-1: ab923251053a6cd74c4b57b0c874c91a86b65be3 SHA-256: 5eed378d129b1a463cc818ef642dbde285d3d2493c9be1d5aeaac14bf7de8ea8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The primary malicious link identified is https://netcdn.tw/app/431946152/roblox-account-hacked-crying-game-hack. The document body and embedded links suggest a phishing attempt to lure users to potentially malicious websites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/roblox-account-hacked-crying-game-hack In PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-bad-business-hacks_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-coins-and-spins-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_off00004faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FAA 26520 bytes
SHA-256: 3e6d25e7c4a81605127354e8cf0f0f87fa1a27d217aa03f7418f29f2b9dafc89
font_01_sfnt_off00008c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C18 19188 bytes
SHA-256: 6e172d265a57a9a19bb9e29bd5faa8472506cbf795648635306df26322bd65fc