Malicious PDF — malware analysis report

Static analysis result for SHA-256 89f04027c9599a1d…

MALICIOUS

PDF

34.7 KB Created: 2021-06-30 13:53:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 69a83593701c1a83fac85905085b9d21 SHA-1: aa8f6e5b0e28e578ea427fcc647c858b4dd339d3 SHA-256: 89f04027c9599a1d9edc7dac22653529b67c6f7cc363872862801475d3c394d2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, masquerading as game hacks and free item generators. The primary lure URL is http://netcdn.co/app/431946152/roblox-bit-slicer-speed-hack-game-hack, which is designed to lead users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or social engineering attack aimed at redirecting users to malicious sites.

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-bit-slicer-speed-hack-game-hack In PDF document text
    • https://mountainholidaytreks.com/userfiles/files/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/op-rewards-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/spin-link_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-roblox-items-2021_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-get-free-robux-on-laptop-easy-2021_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/como-ser-hacker-en-roblox-en-movil_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-hack-old-accounts-roblox_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/pokemon-go-windows-free-download_GM1094591345.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-free-draw_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-hack-roblox-accounts-with-edit-this-cookie-2021_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-minecraft-java-edition_GM479516143.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_off00002fdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FDB 22512 bytes
SHA-256: aa975b829670e1274b455c8f610c3a043f487675c4b2daffd1dd64f2039a6ece
font_01_sfnt_off00006205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6205 19232 bytes
SHA-256: 3034837cce25238a09bd9cea9a3b9978b50aed92e9ccdcf764a6bc9f5cb6a932

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