Malicious PDF — malware analysis report

Static analysis result for SHA-256 b532605c316ebada…

MALICIOUS

PDF

34.5 KB Created: 2021-07-01 12:58:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 720b0bed658b2032392a5cb740402da5 SHA-1: 80fc0c15d095a2c91a8473b9e7d87af2c340fbab SHA-256: b532605c316ebada4b04101fae4e5a312ef78ddcc205c04636ebd9170302d56f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free robux' lures. The primary malicious URL identified is http://netcdn.co/app/431946152/bad-busiiness-roblox-hack-game-hack. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

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/bad-busiiness-roblox-hack-game-hack In PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-godzilla-roblox_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-to-hack-roblox-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-to-get-free-robux-easy-on-ipad_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/play-coin-master_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-to-download-a-swearfree-roblox-speech-plugin_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/roblox-lovenet_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-roblox-for-roblox_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-to-get-all-pass-for-free-in-greenville-roblox_GM431946152.pdfIn 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
font_00_sfnt_off00002f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3A 22564 bytes
SHA-256: cdad7df45c7188c9a5702524f1bd4d890ddc407483cfba375f196a24085e78cf
font_01_sfnt_off000061b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B9 19088 bytes
SHA-256: 1ff11cd2101382e288c6f385d8a5cc64db376fa456fcf7c8805d5be3c4d0e212

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