Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ef32913306393bc…

MALICIOUS

PDF

35.1 KB Created: 2021-06-28 10:03:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 716e773fcfc597bd3a654e69d2a2fecd SHA-1: ab1056e034e3269ca60b231f309b2fbbd695aa28 SHA-256: 9ef32913306393bcf75ca0edd1e656d8ec412a264722b0e36589928fe5ec931f
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/how-to-get-free-robux-2021-april-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/no-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-fly-hack-in-roblox-skywars_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-hackear-ninguna-encuesta_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-dezs-nuts_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_off00002ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF4 22432 bytes
SHA-256: bf6251a139de523538676388e0b7fc24fd6c01ba859a2f291c4063e344c86b65
font_01_sfnt_off000061ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61EC 19756 bytes
SHA-256: b5ec6236957dd10f2fd262fa8d914de73adfe8a0ba55cc7946764137a2b9d016

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