Malicious PDF — malware analysis report

Static analysis result for SHA-256 d288aec1dfe48ba3…

MALICIOUS

PDF

47.8 KB Created: 2021-06-09 05:44:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4b86efb5d7d55622f8d0b6426644ea66 SHA-1: c3e20fa9397dc95cb8d58ea748d29b14920350f7 SHA-256: d288aec1dfe48ba3458f8f8ce7cf4b2acc70698601ace0a99d3d7e1a9a66b9eb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure for game hacks and generators, directing users to a suspicious URL. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious content, likely for credential harvesting or malware delivery. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/roblox-online-hacker-tool-game-hack PDF link annotation
    • http://library.atim.ac.id/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/pokemon-go-free-unblocked_GM1094591345.pdfIn PDF document text
    • http://library.atim.ac.id/repository/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-macbook-version_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-roblox-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/extension-bigefpfhnfcobdlfbedofhhaibnlghod-mega-securehtml-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-free-clothes-creator_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.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_off0000509d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x509D 25180 bytes
SHA-256: 8b97a0dae194059fec5b106f7be7249d242f6290f992814e95034278c7976970
font_01_sfnt_off00008b25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B25 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000097cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97CD 18300 bytes
SHA-256: 52c8a9ca1115b337a6090981eadc83169efa86c1ebb8b835c3d6717baaf49b09

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