Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bf9034a42526e57…

MALICIOUS

PDF

35.9 KB Created: 2021-06-29 10:12:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4e710a1e762dd0712ec2ad1ce8cfd27a SHA-1: 2d7801b7f8b59c4a76ecb4db69e6077e6231ae13 SHA-256: 7bf9034a42526e5798b0ba2e761ab83dd5e147a80f87a3b0b8701f696a6032d8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game items and hacks, directing users to a known malicious redirector. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content. While no scripts were explicitly extracted, the nature of the lure and the presence of redirector links indicate a high likelihood of further malicious activity.

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/dog-roblox-free-costume-make-game-hack In PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-tokyo-ghoul-online-how-to-get-free-half-ghoul_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/claim-gg-free-robux-app-by-roblox-events_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/admin-panel-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-character-cheat_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/does-roblox-have-a-built-in-anti-exploit-anti-cheat_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-hacking-kako_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/earn-free-robux-right-now_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/how-do-you-hack-a-roblox-server-on-mac_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-hacks-account_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/robux-free-new_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-catalogs-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/tiktok-free-views_GM835599320.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/cheat-for-roblox-phantom-forces_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-bubble-gum-simulator-cheat_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/hacking-my-brothers-roblox-acaawaant_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_off00003061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3061 23480 bytes
SHA-256: f900adffab9de186b530b2952f0c4bd2bbee3d9605027a44931de2f0b140a91f
font_01_sfnt_off000065c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C2 19688 bytes
SHA-256: 8d84fb1e2e2907cdaf6cb387886da1284e384102b4f170443c8aeee621a5497d

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