Malicious PDF — malware analysis report

Static analysis result for SHA-256 373342db01c1f889…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 06:55:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: eeb3d5e2564af7291d668c0976228970 SHA-1: c0164d3a31e103a87ad643e4e48aa29e8d96cf65 SHA-256: 373342db01c1f889dabfd1fbb4b00f243d2a36bf826baad7bc9aaabdd233dc15
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising free generators and game hacks. The primary redirect URL is http://netcdn.tw/app/406889139/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml-game-hack, which is associated with known malicious redirectors. The document's content and heuristics strongly suggest a phishing or scam attempt designed to lure users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/boku-no-roblox-remastered-money-free_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/hacked-server-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-roblox-pin-t-shirt_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-free-purple-hat_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/cm-free-spins_GM406889139.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_off00002f5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5B 22836 bytes
SHA-256: 9490f33debfc5460d2209257e65f69707e569007adc3e07f656bdf9cf59ca2cf
font_01_sfnt_off0000626c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626C 19736 bytes
SHA-256: 17d286141fb92aca79f6fa2d77a0d502adf1cdb7fdcb36402b831fbaaedb5b1c

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