Malicious PDF — malware analysis report

Static analysis result for SHA-256 35552992b38987e9…

MALICIOUS

PDF

35.0 KB Created: 2021-06-25 15:24:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 47bb51db258cdfd8bcf814be5e106d5e SHA-1: 04ae52fd021d838adde8d4bcbe3ae620afb63ca1 SHA-256: 35552992b38987e92add3a7513b4d98698f4fab2b0c64f23720b94192862cebd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector infrastructure, specifically http://netcdn.co/app/431946152/play-roblox-for-free-no-downloading-game-hack. The document body and heuristics indicate a lure for game hacks or free currency, designed to trick users into clicking the malicious link. This likely serves as a first stage to download further malicious content or phish for credentials.

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/play-roblox-for-free-no-downloading-game-hack In PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-in-any-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-hack-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-injectors-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-not-get-your-roblox-account-hacked_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-roblox-accounts-with-bruteforce_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-cheat-on-roblox-guess-that-song_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/blockland-for-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-write-a-script-for-hacking-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-comcom_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/pubg-uc-dundle_GM1330123889.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-free-pants_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-minecraft-for-free-on-ps4_GM479516143.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
font_00_sfnt_off00003013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3013 22312 bytes
SHA-256: 6a6c8a05f8981c277f33a02c03b0806d4ddf3b537697a9c7e172198b523ec029
font_01_sfnt_off000061fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FA 19612 bytes
SHA-256: f463666b5a9b7d5a71fb883bd1f89c76511f5b6f3d9c0f3b3de356f764b0def1

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