Malicious PDF — malware analysis report

Static analysis result for SHA-256 911b91b21c10ae97…

MALICIOUS

PDF

34.9 KB Created: 2021-06-30 03:31:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cd45aef21cfa8a643a0b38f7ba9ad618 SHA-1: 57e276a39d70eb4aeef2f85b0ebdbc2eb0771d66 SHA-256: 911b91b21c10ae97d1a0ccc9a3bd32d5a89ed90f110bfe430d412ff22ac7204d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free in-game currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn serves further malicious PDF files. The document body contains obfuscated text and numerous URLs pointing to similar scam-related content, suggesting a campaign focused on credential harvesting or malware distribution through deceptive PDF lures.

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/hunter-x-hunter-id-hack-roblox-game-hack In PDF document text
    • http://energyx.com.tw/image/data/files/roblox-zombie-rush-free-online_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/roblox-shirt-maker-free-shipping_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/roblox-robux-hack-youtube-2021_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/rbxfree-com-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/how-to-cheat-in-roblox-super-power-training-simulator_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/coin-master-hack-apk-latest-version-2021_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_off00003184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3184 22296 bytes
SHA-256: 0cc035fe7d13eed33793729f52bf10d714d1ceb2749a68f6652b926fc7f2ffb6
font_01_sfnt_off0000632f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632F 19072 bytes
SHA-256: 615edb3d12fdf1a979c80d7f7f4a2ffe35894af317660975ad2dae73a14c3799

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