Malicious PDF — malware analysis report

Static analysis result for SHA-256 2631ab1f1c892262…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 17:56:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b728a783fbf93ec3be95814f14572ba9 SHA-1: 8a21df5b8e8ddd1d6496e51d5830fcadb182bdcc SHA-256: 2631ab1f1c8922621952f2c81e6aeeff0ca3d93fbc82942341f190d2589a8cf0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free in-game currency, directing users to a known malicious redirector URL. The document body and embedded URLs indicate a phishing attempt disguised as a guide or cheat for popular games, aiming to trick users into visiting malicious sites. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or scam campaign.

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/406889139/how-many-villages-are-in-coin-master-game-hack In PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/pokemon-go-free-candy-cheat_GM1094591345.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-apk-july-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-free-robux-roblox-2021-august_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-make-a-minecraft-java-server-for-free_GM479516143.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/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/bloxwin-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/wurst-client-112-2_GM479516143.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF4 22776 bytes
SHA-256: df253cde398ba28283b2ef2d75006168e3715b5d646c8d19e8d905b16fd55c76
font_01_sfnt_off000061d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D6 18388 bytes
SHA-256: 9c87e5ed49e9536ed1484a27cc6e2825eff3a659d78e9d439c6f65356479f2fe

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