Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7dafdc5aeb5910c…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 21:50:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 18ae5cd34dbd24b4fff2065203432859 SHA-1: 3484fbebbdd6ea15b67e6db55bd1d984add3b17f SHA-256: d7dafdc5aeb5910c7ee772c378b10f14df51ca9639224a8fcd151d6ef0194880
82 Risk Score

Malware Insights

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

The PDF document contains a prominent link disguised as a generator for free game items, specifically targeting popular games like Roblox. This lure is designed to trick users into visiting a malicious URL, likely leading to further malware downloads or credential harvesting. The ML classifier strongly indicated maliciousness, and the presence of numerous related URLs reinforces the phishing and scamming intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • 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-get-free-roblox-premium-game-hack PDF link annotation
    • https://www.tiancom.com.tw/upload/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/pokemon-go-x-free-download_GM1094591345.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-hack-without-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/hack-para-atravesar-paredes-rn-roblox_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/2021-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-script-cheat-engine_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-free-item-in-catalog-roblox-2021-november_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/hack-de-allahua-kabar-roblox_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/minecraft-free-version_GM479516143.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_off00002f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F93 22812 bytes
SHA-256: f5f3a8193fa96948093020e2009d452be419b11a2fbbb75ffea8208166772be3
font_01_sfnt_off000062a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A4 19592 bytes
SHA-256: 8b1b51e6228fdc9650fa24152b1b7f272427408116855cfdbd7c3d0194f83bbd

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