Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b9e22055ee0ce51…

MALICIOUS

PDF

46.3 KB Created: 2021-06-09 13:32:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d543ae50df070b2116598ed8100868f9 SHA-1: de21acdbd51ea73ea73f0da98dcdb45f9a1e507c SHA-256: 2b9e22055ee0ce519d9bc7503e4b6f78f60eb88bfe85def15511b4f52628bf9e
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a lure impersonating Facebook, promising a Roblox game hack, and directs the user to a malicious redirector URL. This indicates a credential phishing or scam attempt. The embedded URLs are likely part of the redirection chain to a final malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.tw/app/431946152/someone-hacked-and-bought-something-roblox-game-hack.
  • 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 https://netcdn.tw/app/431946152/someone-hacked-and-bought-something-roblox-game-hack In PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-roblox-hack-generator-club_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/roblox-free-bc-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-daily-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/robux-hack-2021_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_off00005168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5168 26720 bytes
SHA-256: 7ab8ca1297a8056e674092df68eba68fb521df4e6e8835944897d8ea3c4c1358
font_01_sfnt_off00008f3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3B 19432 bytes
SHA-256: b039771e4d8b798a4b0a7c3b24b7294e744f8f35550e52d83e57cb8c42985ca6

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