Malicious PDF — malware analysis report

Static analysis result for SHA-256 389e50139f2d73d5…

MALICIOUS

PDF

36.5 KB Created: 2021-05-21 00:36:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1d97d1a463319e3f024bdc928d3ecd8a SHA-1: f1a44a9cb2676bda561adf8643f98648f05ebb03 SHA-256: 389e50139f2d73d5c632270c3bdaad2339ed0ecb15e6d05958081c8dbb50fbd8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically mentioning Minecraft mods. The document body, though partially corrupted, also contains references to 'Free Minecraft Mods For Ps4' and a URL that aligns with this lure. The embedded link likely leads to a malicious download or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/free-minecraft-mods-for-ps4-game-hack PDF link annotation
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-robux_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/get-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000034ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34FF 25344 bytes
SHA-256: ffdfe2834328f3a6d0eeacc17a1db0170041cd9676f8dae3688ad46bce02f1c8
font_01_sfnt_off00006dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCE 18100 bytes
SHA-256: afa4c211481c2918fc981f85699f534e91f71a3c97d40d186225a72223318956

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