Malicious PDF — malware analysis report

Static analysis result for SHA-256 446f1027cf9708ed…

MALICIOUS

PDF

33.8 KB Created: 2021-06-20 11:17:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9373b250eea1c7dac52417a3adabc5c3 SHA-1: 5e743c005c4f49726ee33b8e7658f4742595a7c7 SHA-256: 446f1027cf9708ed43cfc428261af9ad3379047bcf5225246d94eb47098bf8a0
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs lures related to game hacks and free currency generators, as indicated by multiple high-severity heuristics and the document body content. It contains numerous links to external websites, including 'netcdn.co' and 'my-travel.com.hk', which are likely designed to redirect users to malicious sites for malware downloads or phishing. The ML classifier also strongly flagged this PDF as malicious.

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.
  • Invisible PDF links to CAPTCHA-themed web lure high PDF_CAPTCHA_LINK_LURE
    PDF contains invisible clickable link annotations that point to a CAPTCHA/capcha-themed web path. This is a common phishing and ClickFix-style routing pattern: the PDF itself is inert, while the linked page performs the credential prompt or fake verification.
  • 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/roblox-phantom-forces-hack-client-game-hack PDF link annotation
    • http://www.my-travel.com.hk/upload/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-treelands-free_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-generator-no-survey-or-captcha_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/instant-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-accounts-with-bigger-head-roblox_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-speed-change-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-village-cost_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_off00002e77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E77 21540 bytes
SHA-256: b4dc0f5cc6512b42167dac1d39304e47350562202bfcefaba1973d7800e4c920
font_01_sfnt_off00005db7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB7 19624 bytes
SHA-256: 1888773bfd3f0a445e731effefd5435bb2d484086b6442f4d26e69aa22ecfed1

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