Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dc3d0743f014b4a…

MALICIOUS

PDF

47.9 KB Created: 2021-06-03 05:22:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4b70e993739c7e2d815ed7b4f3b0f2e3 SHA-1: 518a0d191c70a2eaa911678e9101da55a2d19950 SHA-256: 0dc3d0743f014b4ac4c16f125fe083fd766772c0c4cd42118bd79cddb23dfac0
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 0.9796

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.online/app/431946152/how-to-get-free-stuff-on-roblox-game-hack PDF link annotation
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/coin-master-hack-no-survey-2021_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/ispoofer-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052ad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52AD 24784 bytes
SHA-256: 45ed18093f27332b1bfb4b40d09db0b8274cedc323720abc0cf88d6e379c67d9
font_01_sfnt_off00008b77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B77 3884 bytes
SHA-256: 64ea6bfd232c3abde76d8b86727203bfa3f935a5783cd0c1f642cf6d3fb42b29
font_02_sfnt_off0000981f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x981F 18356 bytes
SHA-256: ffaf9c1d0f0fa5958176d70382b911ada4f2001fc33e5be3f9589d94896a3fd5

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