Malicious PDF — malware analysis report

Static analysis result for SHA-256 53cf1cd4cddde4eb…

MALICIOUS

PDF

32.6 KB Created: 2021-07-05 00:26:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 674516f4825d2cea032e1d6ed64095d3 SHA-1: cb130aad98b7d5e0868793dc510bc0531ddefb0f SHA-256: 53cf1cd4cddde4eb57e7eac0ccb4ffefd8e815aa6823b741dbfc1dc1b2f126a3
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 0.9824

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/431946152/protosmasher-roblox-free-download-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/how-do-i-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-and-tix-giver_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-cheats-2021_GM406889139.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_off00002a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A1F 21492 bytes
SHA-256: 5b044b8fb0df07589e598713be015a9987e1f524cea5d77a9a42d16a9239fc87
font_01_sfnt_off000058d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58D0 19656 bytes
SHA-256: 0eeaf426e856ad0785e0445b9a3f2652fe4987a2ff39e758b5c15129f8df7caa

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