Malicious PDF — malware analysis report

Static analysis result for SHA-256 5804b7aee074d435…

MALICIOUS

PDF

35.3 KB Created: 2021-07-02 05:31:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 975a9b0196a87ee4f5d294a863082ee8 SHA-1: 2861ef75404b93753172e3338996bde39899c959 SHA-256: 5804b7aee074d435f6df5ccc7095faa9d407ef05b9c8fc7c9bdb24c02463ecc8
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.co/app/431946152/codes-for-roblox-free-robux-game-hack PDF link annotation
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-orby-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-sailor-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/do-this-for-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-free-play-online-no-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-make-t-shirt-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-robux-by-agarminer_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-om-nom-simulator-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/room-cheat-codes-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/bucks-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-roblox-card-codes-no-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/robux-hack-code-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-hack-exploit-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/robux-hack-generator_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_off000031b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31B6 22896 bytes
SHA-256: 6f3e32d48d865c6613eb555d8a3cbd44b2d79e390a4f686aa3d341a47e70b957
font_01_sfnt_off0000654c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654C 18964 bytes
SHA-256: 582933343d0b50a5272a19219d05119f66c4490f3bf62618d5b39949d1c5d0d9

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