Malicious PDF — malware analysis report

Static analysis result for SHA-256 f60bc73a67e4ad7d…

MALICIOUS

PDF

45.2 KB Created: 2021-06-09 08:50:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 96955e3528ae54f01018b51ae5fc55d2 SHA-1: ef095052650417d15014cf91101e106f4a9bd4cf SHA-256: f60bc73a67e4ad7d2c50ca206361d8083941652a6b5256d9e2b35337ac368a1f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.tw/app/431946152/how-to-get-free-clothes-in-roblox-mobile-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/how-to-get-free-clothes-in-roblox-mobile-game-hack In PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-get-free-robux-fake-card_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-tiktok-accounts-with-2021-fans_GM835599320.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-much-is-uc-pubg_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/farewell-hack-roblox-one-piece-open-seas_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/774-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-name-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-hacks-2021_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
stream_004_off00004fd3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FD3 27352 bytes
SHA-256: f7e46ef89431269651a09900ff0b494064d4d16d4e6e6faedb39d6c2c20c14b4
font_01_sfnt_off00008ceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEB 18700 bytes
SHA-256: 240143f545be99864afdf6e3b8248805923843431065bae960b14bfadf77f550

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