Malicious PDF — malware analysis report

Static analysis result for SHA-256 db0d84109fff4e4c…

MALICIOUS

PDF

54.3 KB Created: 2021-06-03 20:57:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: daf6402fb3a5aead161bc84d93a8f9d4 SHA-1: 506e1c7cd569247f8a9fb5588e47c70ffdfcd65d SHA-256: db0d84109fff4e4cfed0618c81dca9eb296d91409426c46751246e980ec9210c
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 0.9491

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/what-to-do-if-your-roblox-account-is-hacked-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052cb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52CB 26752 bytes
SHA-256: 33637851621ef0c4c0caac2dc145856a8c592f219d36ae8a241ab28364742af3
font_01_sfnt_off00009041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9041 3884 bytes
SHA-256: 64ea6bfd232c3abde76d8b86727203bfa3f935a5783cd0c1f642cf6d3fb42b29
font_02_sfnt_off00009ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE4 7272 bytes
SHA-256: f462303657ce1de10d3e7d5ae1fe17c8584116bd5bc216971166de87266da924
font_03_sfnt_off0000ae55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE55 19292 bytes
SHA-256: 4a4cb24db5618fb19574c0ca2c5cce5ebefc8285e5d23c0c59accc658f028dab

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