Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fdda551eb8b0356…

MALICIOUS

PDF

34.5 KB Created: 2021-06-29 18:14:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f3939617c1d100556bd04f85259fdbae SHA-1: 3a54ad2fd192277808c4af77e5f8b898804c7a80 SHA-256: 8fdda551eb8b035621da5ba6aabe63791ef07f56ef82e9dd130cd8fd8dcc5df6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and explicit lures related to game hacks and free in-game items, such as 'how to get free clothes in Roblox'. The primary malicious URL identified is http://netcdn.co/app/431946152/how-to-get-free-clothes-in-roblox-on-phone-game-hack. This suggests a phishing or scam attempt designed to trick users into visiting a potentially harmful site. No scripts were extracted, but the document structure and embedded links strongly indicate a malicious intent.

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.co/app/431946152/how-to-get-free-clothes-in-roblox-on-phone-game-hack PDF link annotation
    • https://lib.bunghatta.ac.id/app/repository/game-roblox-online-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/paginas-para-hackear-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hack-account-roblox-with-link_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-gold-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/caillou-hack-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-free-robux-hack-tool_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-hack-someone-on-roblox-2021-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hack-lumber-tycoon-2-download_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-place_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/retail-tycoon-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hack-my-roblox-acount-now_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-cheat-noclip_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-roblox-online-generator_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/pastebin-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/broly-simulator-cheats-roblox_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_off00002fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBF 22468 bytes
SHA-256: 13f32c4666183e65580623523150987ba33777e40e881ae57ca66570b295228e
font_01_sfnt_off00006133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6133 19240 bytes
SHA-256: 3d418ae0eee1193b97cb313e11d600fdb8ec4c5917672a8b6fb39002202d093c

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