Malicious PDF — malware analysis report

Static analysis result for SHA-256 aac402b24856c40c…

MALICIOUS

PDF

42.1 KB Created: 2021-05-14 01:23:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 511413032ac64298480b77d75acf89aa SHA-1: d8265b76e377920b8c92e9e6aaaf09b3e16a7591 SHA-256: aac402b24856c40c737192703b7300fc866ddd3a10f1b6b4085b3ac3c862b9a0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "free game hacks" and "free robux" lures. The primary redirector URL is https://netcdn.xyz/app/479516143/minecraft-win-10-free-game-hack. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful content or malware. No scripts were extracted, but the document structure and embedded URLs strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/479516143/minecraft-win-10-free-game-hack In PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/coin-master-hack-no-survey-2021_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/roblox-free-skin_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/robux-place-rewards_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/coin-master-unlimited-spin-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a4f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A4F 24964 bytes
SHA-256: 61eaf905fbff383f44b748bd66f24b6e0fe90791b71325a80293e6342f17f463
font_01_sfnt_off00008304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8304 18044 bytes
SHA-256: 8c18055e18e603d9435ca6119687fbcabefed8c156a2aaa85b6717beca9cc20e

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