Malicious PDF — malware analysis report

Static analysis result for SHA-256 f63b2dc64d018eec…

MALICIOUS

PDF

43.5 KB Created: 2021-05-13 21:35:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7d3d1f65a2baa580b50f1ec1c09a27b8 SHA-1: 41c0ce45e59f4ec2a61c0d5d3383f494b9dda8f4 SHA-256: f63b2dc64d018eec27857833bef11acefb80ee59691fe5ca52b73d572ad7e639
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-to-get-free-robux-for-real-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful sites, likely to download further malware or engage in credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/how-to-get-free-robux-for-real-game-hack In PDF document text
    • http://katalog.ireyogya.org/repository/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-ios-download-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox40com-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/como-generar-coin-master-free-spins_GM406889139.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_off00004928.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4928 26312 bytes
SHA-256: c03fcf0fe390d0846860663a0cf79e55fd8f35ed17b50c516a3ea27c6fd1907a
font_01_sfnt_off0000869a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x869A 18584 bytes
SHA-256: 4c8fb6f4ba3d8fd1a53aecf8e038afdea7cc6760123f6d2281f23f521b1068d8

Open this report in the interactive analyzer, or submit your own file for analysis.