Malicious PDF — malware analysis report

Static analysis result for SHA-256 28aaf46663a23f9f…

MALICIOUS

PDF

37.2 KB Created: 2021-05-21 17:01:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 263a13c6e90caf825465bc0f07a5d665 SHA-1: c8511d455048a6d563317445fe61a50670c3178f SHA-256: 28aaf46663a23f9fda30b3fcb322902d61bb9a9b038c47a267055003be979335
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing indicating it links to a 'free generator / game hack' lure. The document body and embedded URLs reinforce this, pointing to sites offering game cheats. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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.xyz/app/431946152/roblox-builders-club-free-game-hack PDF link annotation
    • http://enjoybabelisland.com/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://enjoybabelisland.com/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://enjoybabelisland.com/images/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • http://enjoybabelisland.com/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://enjoybabelisland.com/images/can-lucky-patcher-hack-coin-master_GM406889139.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_off00003271.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3271 26404 bytes
SHA-256: 5f28ed197039384292f75d2651efa3e9a13498a95cc71aa973f95b057e3b3efb
font_01_sfnt_off0000701c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x701C 18384 bytes
SHA-256: ca5233fc9ce80ece0aee0c96fa35d529a08b6cb3fb28871df95ba3e8db8004f0

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