Malicious PDF — malware analysis report

Static analysis result for SHA-256 af585b7f80085d7c…

MALICIOUS

PDF

34.4 KB Created: 2021-06-26 16:36:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0c51bd8920fab2fd8645f14130c592bc SHA-1: 89b698b4a82274f617bd0f370027f73672dbdbc1 SHA-256: af585b7f80085d7cf9acb126766a0ccb5ba87c304ee94ffe59304b3ea8afd92e
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.co/app/431946152/archery-simulator-cheat-roblox-game-hack PDF link annotation
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/lol-this-guy-tryed-to-hack-me-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/250-robux-free_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/roblox-shard-seekers-cheat_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/roblox-how-to-free-robux-for-free-with-out-hacking_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/roblox-polo-ralph-lauren-free_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/cheat-roblox-gas-oil-simulator_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/how-to-speed-hack-in-roblox-mobile_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-roblox-pikachu-accessories-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-robux-on-tablet-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/roblox-arc-of-the-elements-phoenix-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/robux-hack-generator-club_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://elearning.mimcabangpurbalingga.com/__statics/gudangsoal/files/robux-hack-greasy-fork_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_off00003226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3226 21160 bytes
SHA-256: feadd1eacab64c6941e9cf10c6e8c81c4b59a69eac5b9bec0ef3f3538b801abe
font_01_sfnt_off00006033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6033 19456 bytes
SHA-256: c3dc8cd4a2cfad2e3841d3fb844be69b9f95814a9f02539c785bcd7055e3acdc

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