Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cf2b02dae4398e8…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 01:43:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1d4c559a1f249787906b42aa978a9329 SHA-1: da18c37e2162505c0e0fb73787138ed58bd1a344 SHA-256: 2cf2b02dae4398e80fa1c894bdb0df9e2c61e5f78237bd0f83996231b16bb060
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/835599320/tiktok-free-online-textbooks-game-hack PDF link annotation
    • http://perpus.wdh.ac.id/repository/how-to-hack-roblox-account-password_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-roblox-gift-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-prison-life-334-hack-download_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-jailbreak-hacker-transparent_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-hacks-mad-city-script_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/flamegg-hack-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/hack-noclip-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/pokemon-go-free-trainer-codes_GM1094591345.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-hack-people-for-revenge-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-apocalipse-rising-hack-dll_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/hack-sharkbite-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/pubg-uc-egypt_GM1330123889.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/master-coin-free-spin-daily_GM406889139.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_off000032f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32F6 21744 bytes
SHA-256: ecdb6ed546d2fabd6fd6cd27724555d84d408ba8188fb24edbf060b67c7c30f1
font_01_sfnt_off000062b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B3 18416 bytes
SHA-256: 6634d32492ed6f49f1be3ed5aa61d145fb228908a778c32ced0b4f68853874e6

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