Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6e7d2a315a5285f…

MALICIOUS

PDF

46.4 KB Created: 2021-06-04 00:51:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d0615a4a25a6cc48cd1546fd20dd4b72 SHA-1: b150d3fcf0598533b3ec9fd4df3a85eb53a179f4 SHA-256: a6e7d2a315a5285f43cc96fb42e2a26bf30baf7cc14d19960256947321e5a048
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting a 'free generator / game hack'. The document body, though partially garbled, includes a URL that appears to be the primary lure. The presence of multiple redirector links and the ML classifier's high confidence score indicate a malicious intent to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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/406889139/free-spins-for-coin-master-hack-game-hack In PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50F6 24744 bytes
SHA-256: bb5f7d3dabc9d3bad21e36e9ec8cf194cd3bdfb956e2d3e1c3f8464e1a7229a4
font_01_sfnt_off00008932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8932 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off0000931d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x931D 18056 bytes
SHA-256: 3401c90f9da97577ae440e5622d1e8fed8a056e7e09ad8fa85d1e768b8d8a9bf

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