Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d5975b2d678f31f…

MALICIOUS

PDF

34.9 KB Created: 2021-06-27 16:38:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: a320176bda0b1f8c6b6419fac600b57f SHA-1: 290f9f0c76db5e86ee1f3b93195c9eaee65be639 SHA-256: 3d5975b2d678f31f70a6e96a7f746cdc7b73511480173345427913c7600a8059
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them by promising free game currency or hacks. The primary link, http://netcdn.co/app/431946152/how-to-give-people-robux-for-free-in-roblox-game-hack, is flagged as malicious redirector infrastructure. The document body and embedded URLs suggest a phishing or scam attempt to drive traffic to potentially harmful sites.

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/how-to-give-people-robux-for-free-in-roblox-game-hack In PDF document text
    • https://weddingcards-expert.tw/upload/files/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/hacks-robux-2021-gebraucht_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/roblox-club-tesla-free_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/roblox-games-for-free-please_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/roblox-hack-asshurt_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-robux-please_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-to-have-free-robux-2021-easy_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_off00003187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3187 22016 bytes
SHA-256: a7603222a04af5e34812427ec2ace5456cc76e20abb2db033443706e01dd0aa1
font_01_sfnt_off0000624a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624A 19520 bytes
SHA-256: be8493cc42d3119b5d2208e986893e4cd28ae35724707fb0616254bbe13ad00d

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