Malicious PDF — malware analysis report

Static analysis result for SHA-256 e112091ee9a3041a…

MALICIOUS

PDF

45.6 KB Created: 2021-06-10 23:56:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 310544aa4a0897cc6713db71431e2a4e SHA-1: 28c05201f39f0ab70b805aaa785450462b388cfe SHA-256: e112091ee9a3041a704f0185c6481b64db469ff4ee5045d35ac3d880644010c1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a "free generator / game hack" lure. This link, https://netcdn.tw/app/431946152/all-free-guardia-presents-in-roblox-game-hack, is designed to entice users to click through to potentially malicious content. The document body also contains numerous other PDF links, likely part of the same redirection chain or a broader phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/all-free-guardia-presents-in-roblox-game-hack In PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/random-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/free-limiteds-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/rbx-points-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/hack-client_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-roblox-gift-card-codes_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_off00005110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5110 27148 bytes
SHA-256: 65e562220ba1275440fa2177be54b4e02253727d1ed2ec7694d1ae32b98c2760
font_01_sfnt_off00008e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E33 18868 bytes
SHA-256: d41980760128bedebc15767fdf1772a9da121b107963d5e805c174784d2fe7dd