Malicious PDF — malware analysis report

Static analysis result for SHA-256 115ae43fea73efb7…

MALICIOUS

PDF

32.6 KB Created: 2021-06-28 08:26:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e979ac3a6d61434399abdb38250db5d8 SHA-1: 97045c13f5798458b41dafe27906320312d314f5 SHA-256: 115ae43fea73efb7df4a232ff0e5840be053ab71de45f3b2eaa62f2411fa5a34
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a common lure of 'Free Robux' and game hacks to entice users. It contains numerous embedded URLs pointing to external sites, one of which is identified as a redirector likely leading to malicious content or phishing pages. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and game hack lures supports a high confidence assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.
  • 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.
  • 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/free-robux-ashar-qaseem-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-granny-speed-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-without-going-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/island-royale-roblox-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/what-is-a-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-com-free-robux-obby_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-does-not-work_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/isuku-roblox-free-shop-hose_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/does-roblox-use-an-anti-cheat_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/who-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE3 22936 bytes
SHA-256: b4a85768a9ee3c812149bc5ac24271aff853bd25c2f8f0b68f5a1f84a8063c16

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