Malicious PDF — malware analysis report

Static analysis result for SHA-256 457252b215143891…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 01:05:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ec87ad3d942ce61657eb4e2b4f0be3e7 SHA-1: d73edc534338d4096bccc795323b4d1c22c470b3 SHA-256: 457252b21514389114d99a5338853b214d07558f9de54d1191084c935ee764ba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, including a critical finding of a link to known malicious redirector infrastructure at http://netcdn.tw/app/431946152/free-robux-script-game-hack. The document body and heuristics indicate a lure for game hacks and free currency, suggesting a phishing or scam attempt. The presence of embedded URLs and the nature of the lure strongly indicate a malicious intent to redirect users to potentially harmful sites.

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/free-robux-script-game-hack In PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/how-to-get-free-money-on-rocitizens-roblox_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/roblox-crown-free_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/free-robux-giveaway-live-now_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/roblox-outfit-maker-free_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/bloodborn-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/robux-download_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/ahegao-hoodie-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/discord-servers-free-robux_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/roblox-free-roubx_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/how-to-get-free-bc-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/how-to-get-a-free-face-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/roblox-holzfller-tycoon-2-hack_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/free-item-give-obby-roblox_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000323b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323B 22648 bytes
SHA-256: baa2cc51925e6dab9784fc0f19074cb1a114dd27a6a02dfa414b219af55de907
font_01_sfnt_off000064bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BF 19116 bytes
SHA-256: b7ec675b0859f84f9d3687bec040beecaec8d80b831038dc5af6dc69bcb309d5

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