Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ed1d60d0e7b8f1…

MALICIOUS

PDF

34.8 KB Created: 2021-06-20 02:53:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cad5f694f2d148f2301cfbb451d79edc SHA-1: 5f965fd02c8dc5a4dbe61301c0b58912dd587af9 SHA-256: a9ed1d60d0e7b8f1ef69740e30783021169128222c57186d2daa1270677d568f
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising 'free generator / game hack' content. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs suggests an attempt to lead the user to a malicious site or download a payload. No scripts were extracted, but the overall pattern points to a social engineering lure for malware delivery.

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/script-executor-roblox-free-game-hack In PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-roblox-big-brother_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/when-will-welcome-to-bloxburg-be-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/cheats-roblox-high-school_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/pokemon-go-kanto-free-pass_GM1094591345.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/hacking-cheats-for-roblox_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000300e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300E 22784 bytes
SHA-256: e0195295d7ff39eaf3c9502b3bc4aedc7a20eaa0c404493588f3d4922a15c90d
font_01_sfnt_off000062bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BD 19192 bytes
SHA-256: f3a51fc67d8c05d2e4aad044fefa6f3423405f670f78b1fc55f86c37a2c91406

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