Malicious PDF — malware analysis report

Static analysis result for SHA-256 2859b1e61daffa2b…

MALICIOUS

PDF

35.6 KB Created: 2021-06-26 21:01:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ced59d06724e2550baf9a7e6332bf4ef SHA-1: bcac88eb9a2ffa9884687c85cf1438029aac0491 SHA-256: 2859b1e61daffa2b727874853a404c00180b93fabd7b758b8a6f1361bc8cc3ba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game-hack lures, indicating a social engineering attack. The primary URL, http://netcdn.co/app/431946152/roblox-robux-giver-hack-download-game-hack, is identified as a malicious redirector. The document body and embedded URLs suggest the intent is to trick users into downloading potentially unwanted or malicious software by exploiting interest in popular games.

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-robux-giver-hack-download-game-hack In PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-get-a-group-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/cheats-fr-roblox-jail-breack-beta_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/notepad-hack-roblox-download_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/lemon-aid-hack-roblox_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-free-spins-link-31-march-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_off000032b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B8 22544 bytes
SHA-256: ad1095ecb87c3e89ee8782f66044bb06f8e194681b709d17359f34250fc55c49
font_01_sfnt_off000064ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AB 19536 bytes
SHA-256: 9d341678e3d2f3448b8b76e1cb7839fdbf63f669cb479ec329f7997007386ba5

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