Malicious PDF — malware analysis report

Static analysis result for SHA-256 2276e5d685fb06d4…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 01:37:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 93a7d7566f1b2a32b2a3a37bce011044 SHA-1: 0a70ac5423cd20ee4a5e9385c66864e39abd7b2e SHA-256: 2276e5d685fb06d42c64eeb3d8af404bf91b275682c46a22e7a39b3c7096bc30
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free Robux generator' and includes a link to malicious redirector infrastructure. The embedded URL `http://netcdn.co/app/431946152/free-robux-genearator-2021-no-suryve-game-hack` is flagged as malicious. This suggests a phishing or scam attempt designed to redirect users to potentially harmful sites, likely for credential harvesting or malware delivery.

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/free-robux-genearator-2021-no-suryve-game-hack In PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-do-you-hack-to-hack-on-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/hack-cuentas-y-nombres-gratis-en-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-cheat-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-no-hacking-acc_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-dayz-cheat-codes_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-free-items-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-stuff-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/pastebin-free-robux-fast-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-meep-city-how-to-get-free-plus_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-hack-in-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/can-you-make-shirts-free-on-roblox_GM431946152.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_off0000312a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312A 21900 bytes
SHA-256: f0104e0690bf94f94931f3b4a263e025fa217460892788db9a413cbf2eb8b220
font_01_sfnt_off0000618e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618E 19516 bytes
SHA-256: 35442845cd91f2643374e01b108a49fec245afb462b99cd15bc23daff642d3dc

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