Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d4747f1cc808ce5…

MALICIOUS

PDF

47.2 KB Created: 2021-05-16 16:33:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ffb4375e6188392f8e0c8071ac5ad2b7 SHA-1: 586ae4a69700e2ac340cae66c5c9d1046f29ef0b SHA-256: 1d4747f1cc808ce5733fdf1806e80814af22c77ccd4472c1dd3957056f9ce289
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-roblox-avatar-ideas-game-hack. This indicates a phishing or scam attempt designed to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/431946152/free-roblox-avatar-ideas-game-hack In PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/oprewards-login_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/wurst-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/how-can-i-get-free-robux_GM431946152.pdfIn 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_off00004e0c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E0C 27136 bytes
SHA-256: 2daa7b20719e27e08477adfcf4407f1b400c96afe32bc3bec94cc1a810b1ffc0
font_01_sfnt_off00008b78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B78 2852 bytes
SHA-256: e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f
font_02_sfnt_off00009539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9539 18568 bytes
SHA-256: c4a7d6ec4adb5f926941c9d8a4fb8d10a178cf54d3fd19c5414a8c2ff4fc644a

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