Malicious PDF — malware analysis report

Static analysis result for SHA-256 78dd68bedc957dda…

MALICIOUS

PDF

46.5 KB Created: 2021-06-04 02:00:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ee28b4d0f88732c7e378c121b6bee88a SHA-1: cac9e741566bfcefc2b2519207b2ee1b0811cb18 SHA-256: 78dd68bedc957ddaca4db53c731774f2793e74b632a84e18b1622c60021cf7ae
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 0.9832

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/431946152/roblox-no-login-or-sign-in-and-no-download-free-game-hack PDF link annotation
    • http://www.library.gkigadingserpong.org/repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-village-4_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/pokemon-go-free-qwilfish_GM1094591345.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000517b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x517B 27256 bytes
SHA-256: 799d5348526617c6f4fd92213ebf8e34049ca855924f8ec1deafb5482f6533b2
font_01_sfnt_off00009103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9103 19088 bytes
SHA-256: 31d5f3547d2a1a838c3c96c743dbcf1b15f49b2b370cd4b01fe55ac73de83866

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