Malicious PDF — malware analysis report

Static analysis result for SHA-256 4556d220612708e3…

MALICIOUS

PDF

51.2 KB Created: 2021-06-11 03:38:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9882c49f0c3f3172374fb1cfa39e6c58 SHA-1: 80fd0c897782823c4f4b8108e66e7b768421faeb SHA-256: 4556d220612708e3c1c05f6d4da3f0e461a19305d9c43151b04f205402367daf
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 0.9724

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.tw/app/431946152/free-cinema-4d-lightroom-roblox-game-hack PDF link annotation
    • https://perpustakaan.itda.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-net-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-games-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-no-hack-or-cheat-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/where-do-you-put-cheats-codes-in-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/get-robux-com_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000528f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x528F 31552 bytes
SHA-256: 6d5e0cd9807655ef6b42802f5a0d1ccb99b97d60cf04b9e599769a3037480381
font_01_sfnt_off000098aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98AA 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off0000a25b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA25B 19348 bytes
SHA-256: b5bfa3acc718e9742d6e4fff2dba0951841274b16a63eadca6903f423ea063be

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