Malicious PDF — malware analysis report

Static analysis result for SHA-256 384b2764286249a9…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 03:05:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 591a04052e8c5a8e9559b1f42d7618f2 SHA-1: 7985274e718fe1461618edcf1a840ccee36ec0be SHA-256: 384b2764286249a9118149536dd5a7e4ad85911a9f5d826ae38acc8d5a890127
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/406889139/free-spins-in-coin-master-without-human-verification-game-hack PDF link annotation
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/how-to-get-a-free-gravity-coil-in-all-roblox_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/hack-apk-of-roblox_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/roblox-online-hack_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/roblox-top_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/how-do-you-get-free-knives-in-roblox-assassin_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/worst-client_GM479516143.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/how-do-you-get-free-robux_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_off00003074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3074 22820 bytes
SHA-256: 5cfcdc8fff71b4dd0888c9cb71fdfe38ecba3158d1fd36337666a3f4b289a1c2
font_01_sfnt_off0000639c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639C 19072 bytes
SHA-256: c9fd34864b519b0f8597df8a70d97409ad8e524dd572afb967e0520e67b08a64

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