Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed20d729fea664d7…

MALICIOUS

PDF

39.6 KB Created: 2021-05-20 17:43:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: befe781a98c4b5b5e3cd795cf8779afc SHA-1: 27af5214dfdc0fb337183cbfd8b81ce2d08d0466 SHA-256: ed20d729fea664d75b99da690d1b420d232a19e9cff678cb7376ee44431f8873
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/479516143/how-to-get-minecraft-for-free-on-chromebook-game-hack PDF link annotation
    • http://www.maranata4x4.co.za/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.maranata4x4.co.za/images/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://www.maranata4x4.co.za/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.maranata4x4.co.za/images/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://www.maranata4x4.co.za/images/pokemon-go-free-game-download_GM1094591345.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_off000036ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36AB 24648 bytes
SHA-256: 625980437500f8f064113086c8a5854151b33587e75b837567804ceb6de5646b
font_01_sfnt_off00006e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E71 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000785c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x785C 18628 bytes
SHA-256: 3a4e3f8378819557dde5b27ff4793c702252829ac96e9550bc2b3bfa5905855e

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