Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5f39b6c83b2c34d…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 06:16:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d25015e5845048f7d4d6926bf16c9cc1 SHA-1: e1b258a8fd2559af4b5785de553f7fe7835183e4 SHA-256: b5f39b6c83b2c34d39ca28905353c930f647238d48563260399b4d03d9e7e429
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/how-to-get-free-robux-fast-and-easy-game-hack PDF link annotation
    • http://polycraft.ae/uploaded_files/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/roblox-download-free-chromebook_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/free-robux-pc-only_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/free-robux-complete-free-hack-no-survey-or-download_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/moon-active-games_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/dinosaur-simulator-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/how-to-make-a-free-robux-game-v3rmillion_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/free-robux-no-scam-no-survey-no-human-verification_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/multiple-roblox-hack_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/plugin-free-robux-download-pc_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/create-free-account-roblox_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/how-to-get-cheat-scripts-in-roblox_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3036 22648 bytes
SHA-256: 885d8b23aa1e0e37a3f5893cee9a5ceda6d61b746ed120624e4c358e1222bb21
font_01_sfnt_off000062db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62DB 19340 bytes
SHA-256: e9e0cf1ab6f783e57183aba6e7ab34e8b0edef29a09b47d1de428d0435b690df

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