Malicious PDF — malware analysis report

Static analysis result for SHA-256 f745e9f87ba640a4…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 16:44:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 485714e7ed2f69cad3c9c705ee237f08 SHA-1: 5795b3afea84cb92be61909f2ac65beb6c351944 SHA-256: f745e9f87ba640a468a647651ab3ede80dfc8890ee098d6767ea688624034a92
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting 'free Robux' or game hacks. The document body and embedded URLs strongly suggest a phishing or scam lure designed to trick users into visiting potentially harmful websites. The ML classifier also flagged this PDF with high confidence.

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.tw/app/431946152/what-games-on-roblox-give-you-free-robux-game-hack In PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/roblox-old-guest-shirt-free_GM431946152.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/pubg-uc-exchange_GM1330123889.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/microsoft-robux_GM431946152.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/i-need-free-robux_GM431946152.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/where-to-get-robux_GM431946152.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/roblox-rocitizens-free-money-glitch_GM431946152.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/download-roblox-clothes-free-online_GM431946152.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/is-a-roblox-account-free_GM431946152.pdfIn PDF document text
    • https://promoindihomejateng.com/ckfinder/userfiles/files/cute-free-roblox-clothes_GM431946152.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_off00002c50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C50 22244 bytes
SHA-256: 562d517ba07f9da2fdc67972b6dbed4a7d6233f662215c18cd78ef8211124fe4
font_01_sfnt_off00005dcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCF 19916 bytes
SHA-256: 8b19fd13ad5b08f11d9c4597e6f2a0c04d71b28f89248dcac2f5c29d09b121fb

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