Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c3dd84c5c5f1ab2…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 16:00:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6a6e1a7661ce6034d0072d43c3a7f4f2 SHA-1: aae3f8458097db0378b99b3711bbf117f912bd2d SHA-256: 7c3dd84c5c5f1ab2b2333f092d6be953f435e4a92cfc08413708384e02bd8093
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 0.9980

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 http://netcdn.tw/app/431946152/free-robux-no-human-verification-game-hack PDF link annotation
    • http://pustaka.fkg.unand.ac.id/repository/pagina-de-hack-de-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/get-roblox-synapsex-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/hacks-for-roblox-download-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/zombie-rush-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/serveru-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-change-name-free-pastbin_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-get-free-robux-for-real-2021-savagefrey_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-how-to-get-free-stuff-from-catalog_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/como-hackear-assassin-en-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/clickme-roblox-giving-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-without-information_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/does-free-giveaway-game-actually-gives-you-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/hacks-for-roblox-apps_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-get-free-robux-in-iphone_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/info-de-jon-fue-el-hacker-de-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-from_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-deep-web_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-get-free-rep-on-roblox-got-talent_GM431946152.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
font_00_sfnt_off0000305a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x305A 22692 bytes
SHA-256: f6be80265fde991cbe46b46da48172c293d2e3a9be9d2583491e633acafb1516
font_01_sfnt_off000062e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E3 19336 bytes
SHA-256: e243cfcdc54e382fec4f8f21d925e3da2d85a56f2aa27bb221d3bf3adc5c4862

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