Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0650d294e4254fd…

MALICIOUS

PDF

49.7 KB Created: 2021-06-04 03:47:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 0fb4247d3c900b6c7e2efd6568891a3a SHA-1: 8578dde3823d0bd75e40eabb9b1d7d8c11a24b6a SHA-256: f0650d294e4254fd92c65c4a82de9b3156a603447a6144025dbbb8f59ed226b4
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to sites offering game hacks and generators, a common lure for phishing or malware distribution. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document may also attempt to trick users into revealing sensitive information like private keys or passwords. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.online/app/406889139/free-coin-master-spins-blog-game-hack In PDF document text
    • http://suaedy-library.net/repository/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/robux-earning-websites_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/pokemon-go-free-friends_GM1094591345.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-roblox-mgui_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/robux-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005271.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5271 27828 bytes
SHA-256: 617266be4e9a3d5df9a8e3fa8b538107d45c591c390217da0dab0ba5f60737b2
font_01_sfnt_off00009158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9158 4100 bytes
SHA-256: 6b20a9c9ee7ec50efa75de37e440c52ddde63d267d55ab5384c4be9fbfb5fded
font_02_sfnt_off00009f54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F54 18464 bytes
SHA-256: a2c76306a813766f02d16bba13a6176cc917de49c90529db8e6e2ffa1e8149db

Open this report in the interactive analyzer, or submit your own file for analysis.