Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3c62dd58f61b850…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 06:47:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 94b18b350f9ab4818dc15539aa49aac7 SHA-1: 9e5f33e88aa64a86e163c7e7697bd10a34bf7bfb SHA-256: f3c62dd58f61b85078d9b37c33ca2123229eaa7e145e6c719e1399824fae3877
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a lure of game hacks and free currency to entice users to click on malicious links. The document contains multiple embedded URLs, including one pointing to an IP address, that lead to pages offering such cheats. The high ML classification and specific heuristics for game hack lures strongly indicate a malicious intent to redirect users to potentially harmful content.

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/hack-coin-master-android-game-game-hack PDF link annotation
    • http://1.179.208.67/ckfinder/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdfPDF link annotation
    • http://1.179.208.67/ckfinder/userfiles/files/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/roblox-robux_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/hack-para-booga-booga-roblox-2021_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/optifine-mcpe_GM479516143.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/roblox-tshirt-free-2021_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/secure-payment-with-roblox-free_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/roblox-free-dominus-hat_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/hack-download_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/best-free-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003494.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3494 22608 bytes
SHA-256: 287cf2d85acfc6ed154087ffe490d2c36a9a021162944e09cfa74b1d4aabe6a9
font_01_sfnt_off000066df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66DF 18436 bytes
SHA-256: c9efc8e8361dabb7440869310d47c8a3e17327798eea6a0660a8d45056159a40

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