Malicious PDF — malware analysis report

Static analysis result for SHA-256 28c77dbbe5b3133c…

MALICIOUS

PDF

45.9 KB Created: 2021-05-11 01:51:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 36c90457eaf4baf1b7e4f77220273a88 SHA-1: 79bacf73b4e96acbcad9a7a9eb389468a3b57366 SHA-256: 28c77dbbe5b3133cd39c2cdfc96a52c201a6e607c72fe8bfd61fca16761de307
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure directs users to 'https://netcdn.xyz/app/479516143/how-to-make-a-server-in-minecraft-java-for-free-game-hack', which is identified as malicious infrastructure. The document's structure and embedded links suggest an attempt to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/479516143/how-to-make-a-server-in-minecraft-java-for-free-game-hack In PDF document text
    • http://www.bois-ariegeois.fr/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/free-robux-script_GM431946152.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/coin-master-map_GM406889139.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • http://www.bois-ariegeois.fr/images/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://freegiftcodes.euIn 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
stream_003_off00004b92.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B92 26252 bytes
SHA-256: bd7469b5ff5c663f340f55839611945e60ecdbb9dbe4faca9de9c5a5db2450ef
font_01_sfnt_off00008705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8705 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off000090c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90C4 18324 bytes
SHA-256: 9279d0b6186d29dee92c92ea41ad607c96b6d67fd8c4a148fb7dbd95f22d9888

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