Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ab31ae170f7e9cb…

MALICIOUS

PDF

42.0 KB Created: 2021-05-13 12:08:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6eb5856aa2abbe67f1e124907a10297d SHA-1: 60a3223e356dbf4dd9438ac69e0d04047289874e SHA-256: 3ab31ae170f7e9cb25c90ee9c06a876bca74b024fea59e2ff7b7225299994181
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a 'free generator / game hack' lure, indicating a social engineering attempt to trick users into visiting a potentially malicious site. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or scam attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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 https://netcdn.xyz/app/431946152/how-do-i-get-free-robux-game-hack PDF link annotation
    • http://elearning-mtsn35.net/__statics/gudangsoal/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn35.net/__statics/gudangsoal/files/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn35.net/__statics/gudangsoal/files/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://elearning-mtsn35.net/__statics/gudangsoal/files/coin-master-free-spins-may-11-2021_GM406889139.pdfIn PDF document text
    • https://elearning-mtsn35.net/__statics/gudangsoal/files/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn35.net/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://elearning-mtsn35.net/__statics/gudangsoal/files/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn35.net/__statics/gudangsoal/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://elearning-mtsn35.net/__statics/gudangsoal/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn35.net/__statics/gudangsoal/files/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://elearning-mtsn35.net/__statics/gudangsoal/files/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • https://elearning-mtsn35.net/__statics/gudangsoal/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://elearning-mtsn35.net/__statics/gudangsoal/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn35.net/__statics/gudangsoal/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://elearning-mtsn35.net/__statics/gudangsoal/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning-mtsn35.net/__statics/gudangsoal/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://elearning-mtsn35.net/__statics/gudangsoal/files/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn35.net/__statics/gudangsoal/files/spin-coin_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn35.net/__statics/gudangsoal/files/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning-mtsn35.net/__statics/gudangsoal/files/minecraft-windows-10-edition-hacked-client_GM479516143.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_off0000485c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x485C 25196 bytes
SHA-256: 8d18f83249cdf2a44287c881af14e18dc8b42f4ad55e40afbcb20b292ea580d6
font_01_sfnt_off00008174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8174 18452 bytes
SHA-256: af4dc877dda7dbd9aa71ce66d9a52868b07d358fe63790b9b74aede2acb33558

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