Malicious PDF — malware analysis report

Static analysis result for SHA-256 cba54ce96ef6e04c…

MALICIOUS

PDF

49.3 KB Created: 2021-06-03 10:49:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6970ef77e980c41c29493e9ac674951a SHA-1: 1bfe4426318c99eed955e213c2290e7f5a067b3e SHA-256: cba54ce96ef6e04c3016cb2ad8a44dd8dadf5522351035d988c658ff142790d0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of free game hacks and currency. The document body, though partially corrupted, contains references to 'Minecraft Free Download 2021' and a URL associated with game hacks, reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/479516143/minecraft-free-download-2021-game-hack In PDF document text
    • https://ifef.es/ckfinder/userfiles/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/client-minecraft_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-hack-review_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-client_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-free-no-virus_GM479516143.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000509e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x509E 24352 bytes
SHA-256: d75e55b019c079c056d6dd12f648d2d88dcbed9b8107b04dba0f76b2a556f59b
font_01_sfnt_off000087c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C1 3020 bytes
SHA-256: f1a29adcea636583330be8db4f6466410de551ac48576b9e1aa5c34e2d665a1f
font_02_sfnt_off00009215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9215 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off00009c25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C25 18692 bytes
SHA-256: f0fa5510acf1599a685d464226cd2f0c140795c6d8c228f219ca543c0e165813

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