Malicious PDF — malware analysis report

Static analysis result for SHA-256 694bf449bcd92ab8…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 10:52:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c6cdb7ec72c7976cb465aab16d901094 SHA-1: 4ac4c65d636f4329f8e40e41a72221a125dfec0a SHA-256: 694bf449bcd92ab876162bf736069fd91ba8f1811d558ec4b00b0a5775d1eb84
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/479516143/is-minecraft-java-free-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/774-hack-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/cheat-roblox-bee-swarm-simulator_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-mod-apk-2021-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/pubg-uc-and_GM1330123889.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/redeem-credit-roblox-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/earn-free-robux-vrobux-com_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-decals-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-in-10min_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_off000033bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33BC 22820 bytes
SHA-256: 0e257cfba44ca840118c8a6065c198c78bea5292255ee8db6ba8a381f3a4fd5d
font_01_sfnt_off00006653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6653 18136 bytes
SHA-256: 9547b58ce6c3755cd95535045daa19e5ef5b9903e70eab3289755a1c0611a372

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