Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e2c3dba55d8b501…

MALICIOUS

PDF

47.5 KB Created: 2021-06-04 03:36:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 73ddee44c010125a10d58ee88dbbfbb1 SHA-1: 369b25ca5ef65bbf24cfe7d4f14be26765a3d629 SHA-256: 5e2c3dba55d8b50198be07178791c5ecc1321ff71dfe9ba25e18ae677232f264
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on 'free generator / game hack' lures. The ML classifier also flagged this PDF as malicious. These findings suggest the document is designed to trick users into clicking malicious links, likely leading to malware downloads or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/406889139/free-spin-online-tool-coin-master-game-hack PDF link annotation
    • http://library.ulb.ac.id//repository/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/tiktok-free-apk-download_GM835599320.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/mcpe-client_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-roblox-for-202100-20210-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005132.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5132 26196 bytes
SHA-256: 10c744caa21629cba69dbc523402bcf330638bbd1aa6dadff1d41f9195d28194
font_01_sfnt_off00008e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E79 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off0000982b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x982B 17960 bytes
SHA-256: ccd8a57ddc21ec57658e97dd2298d9591a9512a4c36f8c476c3f4a0a1231a43c

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