Malicious PDF — malware analysis report

Static analysis result for SHA-256 64ad8da046a3a9a6…

MALICIOUS

PDF

48.3 KB Created: 2021-06-04 04:21:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8550faf93d4cd239c05ac19a4c1611ef SHA-1: fefb32d3ad384805d10dd57625a74f3020d01bce SHA-256: 64ad8da046a3a9a67148dd095d83681c78b6b46e68588d7361daa45ee3b6c573
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded URLs and a visual download button, suggesting an attempt to trick the user into downloading a secondary payload. The ML classifier also flagged this PDF as malicious. The primary IOC is the external URI pointing to a potential download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/free-generator-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-map_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-freebies_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/hack-a-game_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-without-getting-banned_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000515d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x515D 27272 bytes
SHA-256: 66d84ce02e59f573738728b7773263a4bf24cc686d44282992538bd11a69df73
font_01_sfnt_off0000904d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x904D 3400 bytes
SHA-256: 75c3a8e6f5c68e0746f893c922e57fd7e888a21fb038f9ae3eedb0a197a59e24
font_02_sfnt_off00009b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B70 17840 bytes
SHA-256: 3a905730409273d870ff573b7baf28e8fde68c17f4b305340d785871e619a609

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