Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7f364d211360ad6…

MALICIOUS

PDF

33.9 KB Created: 2021-06-19 12:56:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 11f1735c79441413a0e1cd5409057436 SHA-1: 76869762a5092143c36c6b9b75f56d341af7aa6e SHA-256: a7f364d211360ad69c4c466008cee7b735df9c7a91ad5156700363829efc1dd8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful sites.

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/robux-hack-no-app-install-game-hack In PDF document text
    • http://elib-s2.ubl.ac.id/repository/wings-image-roblox-free_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-hack-free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/inside-the-world-of-roblox-free_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-working-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/city17-city-rp-roblox-free-guns_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-hack-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-hack-assassin-in-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-free-shirts-and-pants-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-blood-moon-tycoon-hack-v3rmillion_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/cool-free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-robux-add-only-today_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-a-vip-server-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-get-free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/robux-hack-windows-7_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-no-hack-no-download_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-bee-swarm-simulator-hack-download_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_off00002e32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E32 22076 bytes
SHA-256: ea1c7a93fc84d048116ea1a14c72f7234534167cb19492dacb71170b77e25428
font_01_sfnt_off00005eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFF 19076 bytes
SHA-256: 476d14c96709daa6a3514e1a1af24fb72011a2959934f66fb5d8b1575ebc049d