Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b58d7410043e8b4…

MALICIOUS

PDF

34.6 KB Created: 2021-06-27 06:56:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 28921e56f1af6cf53700581043c8becd SHA-1: f18f242a543d7fce0d9c3451d976977d17d6a2ff SHA-256: 2b58d7410043e8b4e811b154b3a8e3af580f3fe44c867ad193e293312650edfd
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks. The primary malicious URL identified is http://netcdn.co/app/431946152/hallowen-simualtor-hack-roblox-game-hack, which likely serves as a gateway to malware distribution or further phishing attempts. The document's structure and embedded URLs strongly suggest an attempt to exploit user interest in online games for malicious purposes.

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/hallowen-simualtor-hack-roblox-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-gift-card-codes-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-apocalypse-rising-hack-2021-still-working_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/wurst-minecraft_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/radio-cheat-roblox-skript_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-robux-generator-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-open-cheat-engine-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/slx-hack-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-roblox-jailbreak-espaol_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/claim-free-robux_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_off00003020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3020 22048 bytes
SHA-256: 9829c4c3519adf55d773a07390e034085b47393f4c2fdaeda5e39331e2737fe0
font_01_sfnt_off000060e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E6 19444 bytes
SHA-256: 5b3c5c26416e976df7882f8423414d9e0a41d20455e16316753f4f4a7d1246dc

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