Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cf26daa91325f4e…

MALICIOUS

PDF

34.1 KB Created: 2021-07-01 09:09:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fc39ce4b6203757a83f054e1b96c0c57 SHA-1: 77c79551fb271435e5271eb4d0b99b98e85797f6 SHA-256: 1cf26daa91325f4e1ca1c8709a66d5263e21db63d39b8ba70fc16e8e0590a9f4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure for free in-game currency and hacks, directing users to a malicious redirector. The document contains numerous embedded URLs that lead to scam-related content, indicating a phishing or scamming attempt. No scripts were extracted, but the presence of malicious redirector links and the lure strongly suggest a social engineering attack.

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/penguins-on-roblox-free-robux-hack-game-hack In PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-get-a-free-knive-in-roblox-cbro_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/roblox-god-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/btools-hack-roblox-2021-download_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/get-pd-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/roblox-free-robux-scam-discord_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/before-dawn-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-exotics-roblox-assassin_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-get-free-items-on-roblox-ios_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-robux-reedem-code_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/black-t-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/roblox-ninja-animation-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/robux-hacker-google-chrome-extension_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/hacking-on-roblox-c00lkidd_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/roblox-deadzone-hacks_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/best-hacking-websites-for-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-get-credit-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/controls-for-free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-raps-for-auto-rap-battles-for-roblox-list_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/pls-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_off00002f0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0C 22040 bytes
SHA-256: c88b1c338018f0adb783166cfffa9523c4440fc35d168fdfd010ef3f14ee78f6
font_01_sfnt_off00005fe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE3 19236 bytes
SHA-256: 7c7b40b48515db76260cc0d65d24dddeff4454782905c621efb379f76891b129

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