Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd374eb232a8b953…

MALICIOUS

PDF

42.8 KB Created: 2021-06-03 13:31:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1a58d8ef77bb6bf8b78dbf6f18fa1582 SHA-1: 79797868e60a43d4a2cc8fdc8d8488f33ea9bf03 SHA-256: cd374eb232a8b953952d3a8fd8ccfef8d5760463845bbf4c06cbc637f6bb1650
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and generators. The presence of a visual download button lure further supports the malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or redirection attack designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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.online/app/1330123889/pubg-uc-usa-game-hack In PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/roblox-free-models_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/june-29-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/robux-boost_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.midasbuy.comIn 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
stream_004_off00004d93.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D93 24840 bytes
SHA-256: 4284914b2ead540a655d7717143a3d87f0997774fea09a54e3d864e64fcadca0
font_01_sfnt_off0000853a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x853A 18124 bytes
SHA-256: c0ac939e707c6ad5654f64f1f7a4ab5c6f7cfc2e01606ebb22db65d27e378952

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