Malicious PDF — malware analysis report

Static analysis result for SHA-256 13be675295b4a045…

MALICIOUS

PDF

35.7 KB Created: 2021-07-05 16:45:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 61537a8832910cd161cdda9866c2ba9d SHA-1: f5e781352444cd4c85cd49029d0c653633000ffb SHA-256: 13be675295b4a045db32eede8d8a0170bfbca1ffec9a64f4324c6b2581868d8a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. 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 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/how-to-hack-roblox-accounts-on-phone-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-cheat-engine-noclip-script_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/clash-royale-legendary-cards-hack-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-accounts-nbc_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/custom-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-games-to-play-for-free-online_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/face-made-when-roblox-was-hacked_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-get-free-robux-game_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-jailbreak-codes_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hack-sites-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hacks-de-roblox-en-minijuegos_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-mobile-24-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-speed-hack-script-v3rmilion_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000032e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E1 22716 bytes
SHA-256: c192879617923d93829adf8b910db5693af8bc0115adeb52eb57a167d8ca52ba
font_01_sfnt_off000065c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C9 19384 bytes
SHA-256: 084794c69c3a15ed1330993b6e362ce24a67b8c731d0da79d42958a9f82904df

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