Malicious PDF — malware analysis report

Static analysis result for SHA-256 49127ead0b219dc0…

MALICIOUS

PDF

34.9 KB Created: 2021-06-30 21:28:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: abfdcc53eabca339955104f3728c3ac6 SHA-1: 8d4b97a833d0a0c367e117280a22ba07d785df13 SHA-256: 49127ead0b219dc0429bbf0ade85924e6d792bcb7ec4a9b6378431efc0b80475
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free generators. The primary lure URL is http://netcdn.co/app/431946152/free-inferno-box-in-miners-heaven-roblox-game-hack. While no scripts were extracted, the document's structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content.

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 http://netcdn.co/app/431946152/free-inferno-box-in-miners-heaven-roblox-game-hack In PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/pokemon-go-free-dragonite_GM1094591345.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/get-follower-tiktok-free_GM835599320.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/admin-hack-roblox-2021-download_GM431946152.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/free-robux-without-verifacation_GM431946152.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/by-pubg-uc-free_GM1330123889.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/step-3-enjoy-your-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/free-robux-in-roblox-freeee-worksss-2021_GM431946152.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/robux-for-kids_GM431946152.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/roblox-click-teleport-hack_GM431946152.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.madhpku.com/__statics/gudangsoal/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off0000321a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x321A 22244 bytes
SHA-256: b19901c7c1da4beddcd1b94049080ae75bebe7f7baceb31502952e325228cef6
font_01_sfnt_off00006381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6381 19080 bytes
SHA-256: 9ca1ff29ff531d046ca9fce46c13222cba9013300d151d731c5cf2161cba597c

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