Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed5dd276b16374c…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 01:15:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6c16428ad0cfdbf3835ef529ce20b9a1 SHA-1: 10df528cc38f8824058521075bedda83162bae47 SHA-256: 0ed5dd276b16374cd2ef7943b6cbbb944ea37182579d13fae2781160b1d66dc3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into clicking malicious links. The embedded URLs, such as http://netcdn.co/app/431946152/roblox-hack-with-robux-game-hack, are known to lead to malicious redirector infrastructure. The document's content and heuristic firings strongly indicate a phishing or scam attempt designed to lead users to potentially harmful websites.

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/roblox-hack-with-robux-game-hack In PDF document text
    • https://yeushuen.com.tw/image/data/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-items-in-roblox-on-different-platforms_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/undetectable-cheat-roblox-fly_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/how-to-hack-roblox-high-school-2_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/dragon-ball-z-final-stand-roblox-free-levels_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_off000031f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F6 22112 bytes
SHA-256: bfaf91aa2251309074db11927e82522a7f3cde421b58985e406ee7e2e791d75e
font_01_sfnt_off000062ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EE 19384 bytes
SHA-256: 2f9f9a4011d83d3bbca93d8d7b8ed72ae4769a002d6ec2cba14c19110293b7f3

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