Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a33de4602ebdcb7…

MALICIOUS

PDF

35.0 KB Created: 2021-07-09 13:59:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: e6370418816598e0a07bf3e1b3e66686 SHA-1: bcd55fccfc3de8158f97e5742da51dca4e5214a0 SHA-256: 9a33de4602ebdcb736a6fde4bdb40d18c45f39e61f9896a219276c9b6362b0ef
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.tw/app/431946152/roblox-army-free-robux-game-hack PDF link annotation
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/hack-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/free-robux-me_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/robux-free-pastebincom_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_off0000320d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x320D 22144 bytes
SHA-256: 39bbcf87fb659cbfac2ee136721a1af56369db90576009483f1add87a174b470
font_01_sfnt_off0000632a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632A 19228 bytes
SHA-256: 5339edd26a46d5c8fe04f627c79d78710f89e028f0bde03da11f3fdfc149047d

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