Malicious PDF — malware analysis report

Static analysis result for SHA-256 af1eb5ff0ccc0e27…

MALICIOUS

PDF

34.3 KB Created: 2021-07-29 14:18:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6f49f0a2bd02e7ba109ff0120c3897dd SHA-1: e813c8a8f61c108bdef3801ae27aa5b11688aef5 SHA-256: af1eb5ff0ccc0e27e7f898bfd63058641ca47cfe7da239fb490e10ed36b0dfb9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/406889139/free-spins-and-coins-coin-master-game-hack. This redirector is likely used to deliver a second-stage payload or phish for credentials. The document body and embedded links suggest a lure related to game hacks and free in-game currency, a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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.tw/app/406889139/free-spins-and-coins-coin-master-game-hack In PDF document text
    • https://belixconstructions.com.au/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • https://belixconstructions.com.au/images/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://belixconstructions.com.au/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://belixconstructions.com.au/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://belixconstructions.com.au/images/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://belixconstructions.com.au/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://belixconstructions.com.au/images/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://belixconstructions.com.au/images/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://belixconstructions.com.au/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://belixconstructions.com.au/images/minecraft-for-ipad-free_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_off00003046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3046 23380 bytes
SHA-256: cad9d9cb857996f1b4b46340c0a16afac96c81760fa83d44a8668d9d45ec976d
font_01_sfnt_off00006511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6511 18060 bytes
SHA-256: d4954d2d00bde9f6a1061857a61d2c62c1ae360f44744af150ee923481526d51

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