Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc12310daba91d03…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 10:08:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 72db76702941c9ca3a7c513b2bb1857d SHA-1: bdda7963da65ef9cf56c08785c6be402e501dd2c SHA-256: bc12310daba91d038b832883b066d26f7ef810db5d9f67e4e575215a18abe68b
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/406889139/25-free-spins-coin-master-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-ro-hack-roblox-account_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-schrt-in-robux-copyng-it_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/wurst-mc_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/pokemon-go-free-kanto-ticket_GM1094591345.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/tiktok-free-crunchyroll_GM835599320.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-money-cheat-rocitizens_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-synapse-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hacks-for-roblox-superhero-simulator_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/invisible-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/spin-free-coin-master_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_off00003159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3159 22932 bytes
SHA-256: 74e2302077c4063da14414eb24d932ab8eec994d85b8642e995c6b5e855b7ecd
font_01_sfnt_off000064ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64EF 18432 bytes
SHA-256: ec79058dc3660cd38899abd0af6a529c62159de1466b2a8febb865623eb50a1d

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