Malicious PDF — malware analysis report

Static analysis result for SHA-256 685d05cbf8a35b56…

MALICIOUS

PDF

34.7 KB Created: 2021-06-23 16:55:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 04723949383c4266ab1cc89a77acd036 SHA-1: 3b14a8d127f171ad32e7b7375b897e717f6d07b9 SHA-256: 685d05cbf8a35b569631081ccc791248e41af5f747fc38e41f92b48703ace8fb
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/hacker-escape-prison-roblox-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/please-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-dragon-ball-rage-hack-stats-new-method_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-oof-sound-copyright-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/can-i-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-ban-ban-hammer-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robux-adder_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/get-free-robux-today_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_off00002e7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E7E 23056 bytes
SHA-256: fae788baf0646edb2bd456c08ad3eef8d15f0b2be5e1f9b4adaab651be62b5fb
font_01_sfnt_off0000625b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625B 19104 bytes
SHA-256: 300457256e3e0f0ecf0b3ccf04bf55178cc4353b97524fea6824486c3c0d470f

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