Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff9c0556127cfc07…

MALICIOUS

PDF

33.0 KB Created: 2021-07-19 14:59:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 83a3929211103dc9d736136ace832e86 SHA-1: c726ebd5dadf342e07846feabfee9a7b28f4800b SHA-256: ff9c0556127cfc07a0c43247e629967a12290785ffe8fc91958cccf1024f571e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and game hacks, directing users to a suspicious URL. This indicates a phishing or scam attempt, likely to lead users to a site that may host further malware or attempt credential harvesting. The embedded URLs suggest a redirection chain designed to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/431946152/how-to-get-free-robux-without-verification-or-surveys-game-hack PDF link annotation
    • http://mypizzaoven.com/images/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://mypizzaoven.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://mypizzaoven.com/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://mypizzaoven.com/images/minecraft-free_GM479516143.pdfIn PDF document text
    • http://mypizzaoven.com/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/free-minecraft-server-maker_GM479516143.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_off00002ac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC6 21820 bytes
SHA-256: 5cd425c964087ba48c144cf38f9d6b31460e4e7b878df78bc4147bcdf9cf7262
font_01_sfnt_off00005adf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADF 19608 bytes
SHA-256: c4b40d882647ca438afa2539681b5ac4bc26dce61d3295ce86b6fc67a4011c31

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