Malicious PDF — malware analysis report

Static analysis result for SHA-256 065c908e081167c9…

MALICIOUS

PDF

35.1 KB Created: 2021-06-25 17:11:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f5d141d4b71d3edfa4be612a9ef941b5 SHA-1: ad695ce2cfcae517888abdd0fe8ee4f115477e78 SHA-256: 065c908e081167c9a5ea93d84f3b8a2c1ac323cdff71ecaa65b79b48a6e15f77
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising free game exploits and hacks for Roblox. The document body and embedded URLs strongly suggest a lure to trick users into downloading potentially malicious files or visiting further phishing sites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious payload delivery mechanism, likely initiated by user interaction with the links.

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/roblox-free-exploits-download-game-hack In PDF document text
    • http://elib-s2.ubl.ac.id/repository/tiktok-free-views_GM835599320.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/2021-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-jailbreak-cheat-codes_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/all-roblox-free-items_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/generator-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-roblox-protosmasher-whitlist-code-free_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/robux-hack-no-app-install_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-counter-blox-cheat_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-do-you-get-free-vip-on-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-hack-money-on-any-roblox-game_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/hack-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-download-roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-are-people-hacking-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/google-roblox-free-stuff_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-do-you-get-free-robux-on-roblox-pc_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_off00003080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3080 22464 bytes
SHA-256: 6c319851c9a3851207b034d006a86ea0779ee913b69a19b9184ec0ad3fe3f504
font_01_sfnt_off0000629b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629B 19556 bytes
SHA-256: 02e893d94bd6056fb76239bbebf7bce77032f404deb991246a8b184c71f765fb

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