Malicious PDF — malware analysis report

Static analysis result for SHA-256 58b278dfce9ee887…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 20:32:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e5eb6e7d1f0cd2caa2917dc6516654bf SHA-1: 9d6c59604dbf6f515f7c929bf7321aebf0a93714 SHA-256: 58b278dfce9ee8870bebf3cd6271519b94008581a34e355f38f845dd2ed6587e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a 'game hack' lure. The ML classifier also flagged the PDF with high confidence. The document body and embedded URLs reinforce this, indicating a social engineering attempt to trick users into visiting a malicious site that likely serves further malware or exploits.

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/wurst-112-game-hack In PDF document text
    • https://www.sonestad.se/library/repository/tiktok-free-2021-followers_GM835599320.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/comment-hacker-un-serveur-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/hack-skywars-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-roblox-bloxburg_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-reddit_GM431946152.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_off000030f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F1 22076 bytes
SHA-256: 79c8034b7df5e4a8984cf2d85bfc54fc1832a702bbd20c26c55b8ac8e8d12f51
font_01_sfnt_off000061d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D6 18304 bytes
SHA-256: 68e2a8980d4d1d96479e0928bc49a2bdfde0755f91194607075bba0998720a46

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