Malicious PDF — malware analysis report

Static analysis result for SHA-256 718c5045bbe213e4…

MALICIOUS

PDF

44.8 KB Created: 2021-05-13 07:06:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5fcdbda4a27cc212aec0b122dc6dae30 SHA-1: 3314db393a7608e1d90f33ee132707078c94d98f SHA-256: 718c5045bbe213e423527256c95a5ac3a1939549d30249959ceaf8dc74b743e2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector pointing to 'free generator / game hack' content. This lure is designed to trick users into visiting the malicious URL, likely to download further malware or engage in phishing. The presence of embedded URLs and the specific heuristic firings strongly indicate a malicious intent to redirect users to harmful infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/how-to-get-free-roblox-gift-cards-game-hack In PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-free-rare-cards_GM406889139.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_off00004b57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B57 29120 bytes
SHA-256: 3abc77c01b6cd4038a0058f408036bef9ae484c7e6d7354bef41107a6d448881
font_01_sfnt_off00008b91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B91 18740 bytes
SHA-256: 4ca4edcee29dbb5ec5fd43b786ee3a040f637d4fa80ece8255e459f77acc63d1

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