Malicious PDF — malware analysis report

Static analysis result for SHA-256 70a4f2fc99f11ebe…

MALICIOUS

PDF

35.5 KB Created: 2021-07-06 03:03:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 5b1fae479e2c41ef8f6a8a3f0d19574b SHA-1: 08ac69b2faf6085d92b15a9017914ffa441f9994 SHA-256: 70a4f2fc99f11ebee7fe629cff0fe71acfe5ff6e6d2538b46125dbc8f61b64b4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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.tw/app/406889139/coin-master-hacks-for-android-game-hack PDF link annotation
    • http://librarysenior.com/repository/pokemon-go-free-8-bit_GM1094591345.pdfIn PDF document text
    • http://librarysenior.com//repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://librarysenior.com/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/robux-claimer_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/gain-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/make-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/play-roblox-for-free-without-signing-in_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • http://librarysenior.com/repository/red-boy-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-2021-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_off00003502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3502 22840 bytes
SHA-256: 26cdc009da1e55ede435757ac3ddc5b49a269255accddc7aace015f1ce8cc567
font_01_sfnt_off0000681e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x681E 18340 bytes
SHA-256: 91bd7ae00f691f984865c926e2a64ff0fe9f54475d2fd04393c90b8ffd432a6a

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