Malicious PDF — malware analysis report

Static analysis result for SHA-256 197256095bdb8a97…

MALICIOUS

PDF

35.8 KB Created: 2021-06-19 10:04:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: beee97f59835d3e27bda513051a20126 SHA-1: 6a37054ab11436c2656d2d4e189b5c8163554f6f SHA-256: 197256095bdb8a97bf1ea22f79ab760466eaed01fdd60e4fdaa37e87ee6794ce
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generators' or 'game hacks' for popular games. The presence of these lures, combined with the ML classifier flagging the document as malicious, strongly suggests a phishing or scam attempt. While no scripts were extracted, the document's structure and embedded URLs are indicative of a social engineering attack designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-blood-shirt-roblox-game-hack In PDF document text
    • https://iear.com.tw/image/data/files/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/roblox-cheat-codes-for-phone_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/free-robux-card-codes-2021-december_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/how-to-get-robux-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/coin-master-website_GM406889139.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/i-want-robux_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/roblox-how-did-you-do-if-you-hack_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/roblox-adopt-me-hack-money-2021_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/how-to-get-free-robux-hack-2021_GM431946152.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_off000035b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35B3 22172 bytes
SHA-256: 190f7f24dc2c5fe7864a72284aef7870e83326c46c4ecfadc8f895831990a948
font_01_sfnt_off000066c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C1 19216 bytes
SHA-256: dc3c4797f7dd2cce081094562ce2fa4e22bb102737b545e591d90ea55e32e0a5

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