Malicious PDF — malware analysis report

Static analysis result for SHA-256 585d11b927f9c131…

MALICIOUS

PDF

50.5 KB Created: 2021-05-11 07:45:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c9ec5c814a1ccba1bc03f2502e466e26 SHA-1: b9c0240aae69a6d9009708edfaf407374d394ea6 SHA-256: 585d11b927f9c131060be3938d7df66761ff01c11211b81599a210738ead2cab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple links that redirect to malicious infrastructure, specifically promoting "free robux" generators. The primary link identified is https://netcdn.xyz/app/431946152/giftrobux-com-generator-game-hack, which is flagged as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lure users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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.xyz/app/431946152/giftrobux-com-generator-game-hack In PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/hack-master-coin_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/lots-of-robux_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/toolbox-apk_GM479516143.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/block-best-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004952.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4952 27164 bytes
SHA-256: c15024c40448c469d6cbb5c719802bd683bb9709efea39b0a233d5253cbefa6f
font_01_sfnt_off00008675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8675 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9021 7448 bytes
SHA-256: a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90
font_03_sfnt_off0000a204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA204 18564 bytes
SHA-256: d4fe2e40c8749f3e28ba2f676cfcb3a45d14d1e884f99ef521d4b9bf9891a09b