Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2d585287b02c4a…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 07:07:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a153c5f5e6efde7371ecceb7e0d2c890 SHA-1: 7796ffa0cdf43102c6727646a45e4b7d6a16400e SHA-256: af2d585287b02c4a75413fa3cc25780d00ee2d1ae3db5538ab701056dbee4add
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and domains hosting further malicious PDFs, all disguised as game hacks or generators. The document body explicitly mentions 'How Do Yu Hack Big Brother In Roblox' and contains a call to action to 'CLICK HERE TO ACCESS ROBUX GENERATOR'. This indicates a phishing or scam attempt designed to lure users to malicious sites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.co/app/431946152/how-do-yu-hack-big-brother-in-roblox-game-hack In PDF document text
    • http://magnipsor.su/images/roblox-free-robux-codes-2021-december_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/free-robux-and-limiteds_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-get-free-stuff-on-roblox-computer_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/free-roblox-money-for-money_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/free-robux-easy-way_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/get-free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/pubg-uc-id_GM1330123889.pdfIn PDF document text
    • http://magnipsor.su/images/hype-dance-roblox-free_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/20-free-spins-coin-master_GM406889139.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_off00002f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6E 22624 bytes
SHA-256: 2c5da573659b3adfc9b89d8715f5c49c65068c74a7f16704aaecb45c54b267b6
font_01_sfnt_off00006227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6227 19680 bytes
SHA-256: 374ede4f74b6fddaf79554ac6d8e46d070aaeff03b7696d54ead4eeef4de7a6e

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