Malicious PDF — malware analysis report

Static analysis result for SHA-256 8607fdd28d382dfc…

MALICIOUS

PDF

46.4 KB Created: 2021-05-17 04:30:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2eeb7592003ba0f06892b122d737ebfe SHA-1: 6375a95f589ca569892a6474ed575b78090a6a32 SHA-256: 8607fdd28d382dfc891f9d9d759c450163b727f9c393996a291c9e4e9afe6ca4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, leading to sites offering game hacks and currency. The primary lure appears to be 'free Robux' or similar game-related cheats. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/can-i-get-free-robux-game-hack In PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/minecraft-net-free_GM479516143.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/body-roblox_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/robux-free-c_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_003_off00004bde.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BDE 26192 bytes
SHA-256: 35cffe4a05058f4ca21e225d429b306c3881e32b6f1d660538881ba6d3ca286b
font_01_sfnt_off000088ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CA 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off000092d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92D9 18344 bytes
SHA-256: a3821bea5d8002917ca36036ff520c3c0be187df4be91a81bd8356ddd2b369c9

Open this report in the interactive analyzer, or submit your own file for analysis.