Malicious PDF — malware analysis report

Static analysis result for SHA-256 10e18faf9f02c31c…

MALICIOUS

PDF

37.5 KB Created: 2021-05-21 15:15:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 51c79f88026cc469a43199a89d2e81ea SHA-1: aa519a4cc99206889c77097f520a86f12e6a3a38 SHA-256: 10e18faf9f02c31cfe3c3e50d481d2482ffcdc79553bc27e05bb5126c784ac04
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'game hacks' and directs users to a suspicious URL. The document body explicitly contains a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the social engineering aspect. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-to-become-a-hacker-in-roblox-game-hack PDF link annotation
    • https://elearning-min4jakarta.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • https://elearning-min4jakarta.sch.id/__statics/gudangsoal/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning-min4jakarta.sch.id/__statics/gudangsoal/files/static-moonactive_GM406889139.pdfIn PDF document text
    • https://elearning-min4jakarta.sch.id/__statics/gudangsoal/files/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning-min4jakarta.sch.id/__statics/gudangsoal/files/free-robux-codes-generator_GM431946152.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_off00003368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3368 26052 bytes
SHA-256: ffdb01e6f16f6ce3d52b1048f178faee371adbdac108576466847b9d20232106
font_01_sfnt_off00007083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7083 18608 bytes
SHA-256: 64431d83c1c466192ca6f90c953545fb4db60ca1c30fe2a26ad653d3315a559e

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