Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f04b58af135fac…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 18:58:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b97153fe7fb93877766c451cbd94be77 SHA-1: a24650e8549e4b0e7811a4f8c9d220b0f4a59670 SHA-256: 07f04b58af135fac5c7a3a9a329be1d5eadcbb999f825df7893ef3947fd69533
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, with a primary focus on 'free Robux' lures. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests a phishing or malware distribution attempt. The document body also contains a direct call to action for a 'ROBUX GENERATOR', reinforcing the scam pretext.

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.tw/app/431946152/rbx-gg-free-robux-game-hack In PDF document text
    • http://mbbs.hr/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/free-robux-money-no-human-verification_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-tiktok-likes-quick_GM835599320.pdfIn PDF document text
    • https://mbbs.hr/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/new-free-robux_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/the-free-prize-giveaway-obby-roblox_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/pokemon-go-free-to-download_GM1094591345.pdfIn PDF document text
    • https://mbbs.hr/files/roblox-cheat-engine-table-and-bypass-2021_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/work-in-a-pizza-place-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/v3rmillion-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/oprewards-com-earn_GM431946152.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_off00002e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E6B 22448 bytes
SHA-256: e7c029ba066aaf89333eaa94b9a00074d8ee40c3d78a69ed0e76ea549c0e53f9
font_01_sfnt_off000060d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D2 18716 bytes
SHA-256: 5ed4a17f1e1f347672ac707c48d478a4e03b12aa7b666a188f58978ddccfd2a0

Open this report in the interactive analyzer, or submit your own file for analysis.