Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb3b048756bf1cbb…

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 08:21:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 43be795ff261ef3dbe2c26d9416ad4d9 SHA-1: b64938ada6807434f0b35c139a28d438fde8f445 SHA-256: fb3b048756bf1cbbf46628e07b7fa66cc3ca79e8d2628c21de03ac8654e09d0f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn serves further malicious PDF documents. The document body and embedded URLs strongly suggest a social engineering tactic to drive users to potentially malicious content.

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/how-to-hack-a-roblox-account-to-show-people-game-hack In PDF document text
    • http://library.atim.ac.id/repository/free-robux-advertisment-site_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/snapes-free-download-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-no-survey-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-sk8r-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-rixty-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-poke-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-robux-on-roblox-on-pc_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/list-of-roblox-hackers_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hack-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-become-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-mined-pastbin-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/best-hack-for-coin-master-2021_GM406889139.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_off00003029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3029 21968 bytes
SHA-256: abe35e907213e05d3305ca7125206261c8909ffeb98d9f0394a4aea9ed379f11
font_01_sfnt_off000060b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B3 19560 bytes
SHA-256: 19afb8e8e37ce0dd20a6385fc6e9d9ad2b2f46817297bbebb0bcd086b9db6a85

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