Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4275335d684a634…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 13:07:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d17514c4ca890e8e44e78c171cc2881a SHA-1: 72058a89dadd05f07557df108cabf5d82459f94e SHA-256: e4275335d684a634ee3eddf64e0e96b1af713f31223880c93344f92824da4e68
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector. The document body and embedded URLs also point to similar lures, such as 'free spins' or 'game hacks'. The primary malicious URL identified is http://netcdn.tw/app/406889139/moon-active-games-game-hack, which likely serves as a landing page for further malicious activity or payload delivery.

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/moon-active-games-game-hack PDF link annotation
    • http://perpus.unpam.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-any-face-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/pokemon-go-free-spoofing-ios_GM1094591345.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-gratuit-manete-free-box_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/hack-de-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-games-for-free-online-no-download_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
stream_002_off00002f61.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F61 22708 bytes
SHA-256: aa8bfbbfd151eec8add6732f760c73ebc48855b51d859a8d1410966e59f7c76f
font_01_sfnt_off00006262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6262 18208 bytes
SHA-256: a7f6d283b5a15f3346b0391e4b5d7de4ed402d7fb5e201e0fbd4ddbc691d6fed

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