Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe17e6a89e1cb01…

MALICIOUS

PDF

35.5 KB Created: 2021-07-05 23:25:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 08941e1d0232d38de571892cd4b2875b SHA-1: 44130548afe16b2ead09c9c3f2a895918440d2a3 SHA-256: abe17e6a89e1cb016df179f5ea759b8c4d72ee32565033ce1db02fddf2db9b23
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, directing users to websites that promise free in-game currency and hacks. The primary lure is the URL http://netcdn.tw/app/406889139/coin-master-free-spins-and-coins-for-today-game-hack, which is likely a redirector to a malicious site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering attack aimed at tricking users into visiting potentially harmful sites, possibly to download further malware or engage in credential harvesting.

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/406889139/coin-master-free-spins-and-coins-for-today-game-hack PDF link annotation
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-mad-city-free-vip_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/robux-hack-2021-pc_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-draw-roblox-anime_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/evry-thing-on-the-roblox-caolog-free-fast_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-robux-generator-2021-android_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-do-i-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-lua-7-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-games-that-give-you-free-stuff_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-retrieve-a-hacked-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-get-free-shirts-on-roblox-208-november_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-dragon-ball-rage-cheat-engine_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_off00003405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3405 22848 bytes
SHA-256: 30b4a8b9e3289797568aa8d5dd85b93305abe80b2cf20548cba0e2e936fee373
font_01_sfnt_off00006732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6732 18528 bytes
SHA-256: 64e6d113bd97b02afb7632d7b1c85a61d3fc47f14b318ce8b72a94cd305839a3

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