Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ca69b1179fa248a…

MALICIOUS

PDF

43.0 KB Created: 2021-05-14 11:40:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2b9e8d2314781d6562e2d1b6e6a91073 SHA-1: 5622c285d45abbcc8c0e98e1f00e15671991805f SHA-256: 2ca69b1179fa248a1861e5c0817cb5eab12ba023bdedf843d57576698c2b8bfd
160 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'free Robux generator' and includes multiple links to known malicious redirectors. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves tricking users into clicking a link that leads to malicious infrastructure, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/free-robux-generator-for-kids-game-hack In PDF document text
    • http://kupidrbpz.hr/images/_GM479516143.pdfIn PDF document text
    • http://kupidrbpz.hr/images/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • http://kupidrbpz.hr/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://kupidrbpz.hr/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://kupidrbpz.hr/images/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://kupidrbpz.hr/images/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://kupidrbpz.hr/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://kupidrbpz.hr/images/get-me-robux_GM431946152.pdfIn PDF document text
    • http://kupidrbpz.hr/images/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://kupidrbpz.hr/images/roblox-scam_GM431946152.pdfIn PDF document text
    • http://kupidrbpz.hr/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://kupidrbpz.hr/images/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://kupidrbpz.hr/images/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://kupidrbpz.hr/images/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://kupidrbpz.hr/images/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://kupidrbpz.hr/images/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://kupidrbpz.hr/images/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://kupidrbpz.hr/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://kupidrbpz.hr/images/free-robux-website_GM431946152.pdfIn PDF document text
    • http://kupidrbpz.hr/images/coin-master-links-for-today_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_off00004964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4964 25440 bytes
SHA-256: 6d92ddadf9576068bb2aa65d50cba1c59145cae9531a83a7ade9d7d23f2b085e
font_01_sfnt_off000084b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B1 18640 bytes
SHA-256: 699ebd5d78640cc812bbb586150daa4d415ceda65572c7c56e250d7f18cab54c

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