Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8a31417350e1e1f…

MALICIOUS

PDF

32.3 KB Created: 2021-07-19 08:02:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: dbb5097db84cdc488e3d7c8f910a1aca SHA-1: c5412ea0e499a2e498677651481d2a91ab3216ba SHA-256: a8a31417350e1e1fd1d5ac4bd6e9fa8f6dbda28fb1d5b968603659972a788d15
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to obtaining "free Minecraft" which redirects to a suspicious URL. This suggests a phishing or scam attempt designed to trick users into visiting a potentially malicious site. While no scripts were directly extracted, the PDF structure and embedded links indicate a malicious intent to redirect users to external content, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/how-to-get-minecraft-for-free-on-mobile-game-hack PDF link annotation
    • http://www.bripi.pl/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.bripi.pl/images/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://www.bripi.pl/images/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://www.bripi.pl/images/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.bripi.pl/images/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.bripi.pl/images/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://www.bripi.pl/images/free-spin-coin-master-2021-link_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_off00002cb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB7 21868 bytes
SHA-256: 581daf1b6a225ca2d75e2db00351d146826b109aacfe95d0c6aac4963d12c4a2
font_01_sfnt_off00005c9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9F 18104 bytes
SHA-256: 355b14cb1237cfcb324f2687d1fc3cafef0ca686705333751d3cf0333155011f

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