Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b80c068dc27cfb…

MALICIOUS

PDF

39.8 KB Created: 2021-05-24 06:12:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 55954f14bf713fcdb6de0007aecf58db SHA-1: 2ed78bdb96bb2b343706ef21ee7389202876889a SHA-256: 72b80c068dc27cfb416f18d8a03de224cd1d360dcb1425d052b05e41c257645f
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 0.8060

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/free-100-robux-game-hack PDF link annotation
    • http://doganov.be/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://doganov.be/images/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://doganov.be/images/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://doganov.be/images/i-need-robux_GM431946152.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_002_off000030d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30D7 25448 bytes
SHA-256: 832a5c409213fb22927e3fa130a6d25dac3d2f159e97e44f21b36ff77753d96d
font_01_sfnt_off00006c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C35 4156 bytes
SHA-256: 237a42045d5f1fa2fbb552a0aac286d72ad96437b53c39f1a27942643eb543b4
font_02_sfnt_off000079e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E4 18292 bytes
SHA-256: ade71c57547996cc2793a44f7be3e933a3a5664d4c8f362da863e6c031d51f12

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