Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a4ecc401b3d48a2…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 00:48:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 513cea61125410ec550219b77ecf1308 SHA-1: ab41699ce2e9241f0d89cd654c1a6e63106d13ae SHA-256: 6a4ecc401b3d48a264a08329590b496d918d3ec2de2ddf8bf4a962de9856249f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-confidence lure for game hacks, directing users to a suspicious URL. While no scripts were extracted, the document's structure and embedded links strongly suggest it's designed to trick users into downloading or visiting malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

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.co/app/431946152/roblox-damage-hack-game-hack PDF link annotation
    • https://alimi.com.tw/upload/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/how-to-hack-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/roblox-free-script-sir-meme_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/nopde-engine-64-roblox-hacks-download_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/did-roblox-get-hacked-2021_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/cheat-glitchtale-roblox_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/hack-roblox-steve-one-piece-roblox-auto-farm-chest_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-coin-master-spin-app_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_off00002f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0B 22676 bytes
SHA-256: a1699e4aff67538309effebf329507ff41c520565d780a087f1a9dd4b418d881
font_01_sfnt_off000061c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C0 19084 bytes
SHA-256: c25701aae515de2dd3f2e5caa7750651a005e7891b48b3f3ac55fe759356a80b

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