Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ab32599cc9d81e2…

MALICIOUS

PDF

46.2 KB Created: 2021-06-03 06:45:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 3ea02c03c740dedb9e26bacdd1373e3a SHA-1: 23f69ed358720ca5633f595b9ac0ece02dc736c7 SHA-256: 3ab32599cc9d81e2573478f8d597062687b968969d0e086a2f45b11c361da8fe
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 0.9797

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 https://netcdn.online/app/406889139/coin-master-free-spins-iphone-game-hack PDF link annotation
    • http://library.stieyapan.ac.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-ban_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-rape_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/is-pokemon-go-free-to-download_GM1094591345.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/can-you-actually-get-free-robux_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_off00004ff1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FF1 24864 bytes
SHA-256: 441bff960595fe303de6c988fd3f140a89003e1df59efd534a56676d544a6f83
font_01_sfnt_off000088af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88AF 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off00009262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9262 18052 bytes
SHA-256: 7a041e18439e61f25930bd292384183aeabfbba1b3f01f5156e579a6d202eabd