Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c96a739d0eeaa5b…

MALICIOUS

PDF

39.5 KB Created: 2021-05-23 08:07:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9bd79ab69982cb6263e87205b5df4031 SHA-1: a15a3256f790b20d5cf1161a139203970c707577 SHA-256: 9c96a739d0eeaa5bb3a335bd80f4355f59dde5b37e9c0baffed5c0a892e07097
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8068

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/479516143/how-to-play-minecraft-for-free-game-hack PDF link annotation
    • http://julo-it.net/images/wurst-commands_GM479516143.pdfIn PDF document text
    • http://julo-it.net/images/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-free-daily-spins-2021_GM406889139.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
font_00_sfnt_off00003719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3719 24976 bytes
SHA-256: fdb59c69bbe2ff30655d087f0b126360227f9554060110475a2cea1db2b2a8c2
font_01_sfnt_off00006f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F63 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00007902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7902 18284 bytes
SHA-256: 30e565cae926cf2505d0f64cbbb860d09a66a84df24e80d913481d9233f56de2

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