Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bd5562987b0083f…

MALICIOUS

PDF

46.4 KB Created: 2021-06-03 20:25:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4acf810fc96d2e50e58f69befb9519cf SHA-1: 161ac48c05b71152119254c3a04b460eb79c1209 SHA-256: 3bd5562987b0083fa9b96ed90fe56ec0df702e24707160dc435f2d6c379b7d70
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 0.9832

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/479516143/free-modded-minecraft-server-hosting-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-custom-minecraft-skins_GM479516143.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_004_off000056b8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x56B8 26464 bytes
SHA-256: ee02eb753030c3b0826c08a6eb0d2931d93764278f25379557854004523206bd
font_01_sfnt_off00009303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9303 18284 bytes
SHA-256: 4ae19380f71872a59bca81a6826a2f1ac99dae3e110f9987d961b4518a9677d8

Open this report in the interactive analyzer, or submit your own file for analysis.