Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbdd3690a6ccbceb…

MALICIOUS

PDF

33.5 KB Created: 2021-06-25 14:07:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 35d51c9768be1daaa62a1fa69e7e50fd SHA-1: a1af9de6bbb09edc3e4182af99a9ca870b4e8210 SHA-256: fbdd3690a6ccbceb834d76a22bef8345c4d29e8fceaf5f7e90e6592b00498562
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to 'game hacks' and 'Robux generators' to trick users into clicking embedded links. The primary link, http://netcdn.co/app/431946152/hacks-for-texting-simulator-roblox-game-hack, is identified as a malicious redirector. The document's structure and embedded URLs suggest an attempt to deliver a secondary payload, likely through a drive-by download or a malicious executable disguised as a game hack tool. No scripts were extracted, but the PDF's nature and the heuristic firings strongly indicate a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/hacks-for-texting-simulator-roblox-game-hack In PDF document text
    • http://pia2000.net/images/roblox-script-hack-pet-simulator_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/butterfly-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/hacks-for-robux-no-human-verifycation_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/hacks-game-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/roblox-help-someone-hacked-me_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/roblox-robux-free-robux_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-roblox-accounts-with-robux-2021-may_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/robux-gratis-free_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_off000029cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29CD 23108 bytes
SHA-256: 8d2446984593b9cf79a25fe3ce5858bebbd2fffb792a5bab44eb76d790241f26
font_01_sfnt_off00005d4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4E 19444 bytes
SHA-256: 8ee56334ecb23f56611931aca2667f5b89940364888a7363bdad7c9c352251cc

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