Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cdf01dd9d5936b2…

MALICIOUS

PDF

45.3 KB Created: 2021-04-29 06:29:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 49364f95efa261d30b3b5ec923927fca SHA-1: ca0224f821b632137f9eee8bf1ce2e11b1cc711e SHA-256: 7cdf01dd9d5936b2dba2cd49a0c29015a74c2cde1f7d1debcd4c664e05278d58
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links disguised as game hacks and generators, a common lure for malicious content. The ML classifier strongly flagged this PDF as malicious. The embedded links likely lead to further malicious content or phishing pages, serving as a delivery mechanism for malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/stop-roblox-from-shutting-down-cheat-engine-game-hack PDF link annotation
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-roblox-haur.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/lazyblox-com-free-robux-generator.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/pastebin-hack-de-roblox.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/cheat-sa-roblox-rs.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux-on-ipad.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/hack-para-assassin-roblox.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-robux-hack-sheet.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-robux-with-out-rewards.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-get-free-admin-commands-on-roblox-for-kids.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-roblox-exploits-no-key.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_off0000446c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x446C 27048 bytes
SHA-256: 2986552db7bd21562893128e6f543816fea36f7e0f14a3116cf5380270df871e
font_01_sfnt_off0000810c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x810C 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00008ace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACE 19760 bytes
SHA-256: 24049697e903a26752f537b0d95c2cab00d2c929d2e07cab63b925391b1473ff

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