Malicious PDF — malware analysis report

Static analysis result for SHA-256 2486f21c49e26316…

MALICIOUS

PDF

33.4 KB Created: 2021-07-09 10:22:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6377ca9c50d04d9b1213f0fa5b96593d SHA-1: e897f524c52601066d52a17007c2abf89482b47a SHA-256: 2486f21c49e26316f9e3ebd7d35c17aa020f91877cef3ca40323e464bfac14bb
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 a 'free game hack' lure. The document body and embedded URLs suggest a social engineering attempt to trick users into downloading potentially malicious content. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a high likelihood of a phishing or malware distribution attempt.

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.tw/app/479516143/minecraft-for-macbook-free-game-hack In PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/roblox-hack-into-peoples-accounts_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/wurst-18_GM479516143.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/best-roblox-hack-dlls-2021_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/is-roblox-free-to-play_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/without-pokemon-go-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/new-how-to-get-free-robux-on-robloxon-april-2021_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3112 21448 bytes
SHA-256: 78f5f58e196ab9286b27d671e05bd59e4876d32cd78940f820cb759e06bc1bdb
font_01_sfnt_off00005fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCD 18324 bytes
SHA-256: 0f63554c5a6b7bf61911ba90f52c8f6cdd4c0840b663336150c3913e2dc480d2

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