Malicious PDF — malware analysis report

Static analysis result for SHA-256 df4dd20765aa75b4…

MALICIOUS

PDF

49.3 KB Created: 2021-06-11 13:30:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 80af66ae112f8e3403349093ac12659c SHA-1: 2008b1f9834fb22a90c2735d3159ffec9bf4bd3e SHA-256: df4dd20765aa75b433872c324c3d50ebfddcb643853bc91e8c2eb79a9e86f4a1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a heuristic indicating it links to a game hack redirector, specifically pointing to a URL associated with 'roblox-filtering-enabled-weapon-scripts-hacks-game-hack'. The document body, though partially garbled, also contains this URL. This suggests the document is designed to trick users into visiting a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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-filtering-enabled-weapon-scripts-hacks-game-hack PDF link annotation
    • https://pasca.unisba.ac.id/elibrary/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/pubg-uc-zong_GM1330123889.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-clone-tycoon-hacks_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/get-me-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-dll-hack-352021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/hack-mods-for-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-roblox-codes_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/mcpe-com_GM479516143.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
stream_004_off00005361.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5361 31836 bytes
SHA-256: b1f6abe81b5c34130bf37a1c07e39e94930cf238f25a2db3cd9e1fa715ec92f0
font_01_sfnt_off00009b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B1F 19404 bytes
SHA-256: 3ecf02c44c61a5e39975c54502c99f1d24c589ccaf591ee184c4cc384279f914

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