Malicious PDF — malware analysis report

Static analysis result for SHA-256 3577de6d99f20365…

MALICIOUS

PDF

33.2 KB Created: 2021-07-06 14:35:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4eee3a30f5976bcbf26b1e4d0604655c SHA-1: 30c56d1366cf0e7e0626f46cfc589aef51533729 SHA-256: 3577de6d99f20365d02298061f13379f2eaec654b444cf74bc67afd7426b7c84
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure for free Robux and game hacks, directing users to a known malicious redirector. The document body and embedded heuristics confirm the intent to trick users into visiting malicious infrastructure. While no scripts were extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/431946152/free-robux-no-verification-required-game-hack In PDF document text
    • http://library.atim.ac.id/repository/roblox-mad-paintball-2-cheats_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-no-need-to-do-anything_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/what-items-are-free-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-do-you-use-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/is-there-actually-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-survoivr-in-roblox-pc_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/yt-how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hack-para-que-no-te-toqque-en-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-and-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-adder-apk_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/get-free-robux-no-download-no-waiting_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-into-a-roblox-acount_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
font_00_sfnt_off00002abf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABF 22248 bytes
SHA-256: 2629a31ecb20a6f4de86f78ad91a6ea4178e3aec8b5f0eb5a9115608467cea40
font_01_sfnt_off00005bf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF9 19416 bytes
SHA-256: f3ed32896e4f6860af52c2c1cf45278ed23698afb18265a0923db2ea9f5d7019

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