Malicious PDF — malware analysis report

Static analysis result for SHA-256 18ef57f443ffd533…

MALICIOUS

PDF

34.4 KB Created: 2021-06-28 21:30:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: d9ebd798529d5a15bafe80066357cdbb SHA-1: c5f5f914642dafc2ad7ce3c496d9c2fc5d68de6b SHA-256: 18ef57f443ffd53301bedfd336328c0880ebfb39b7288cbd3d64961520505a88
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and free currency generators. The primary lure is 'How To Use Cheats On Roblox Deathrun', directing users to a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content or further malware downloads.

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-use-cheats-on-roblox-deathrun-game-hack In PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-hack-999999-robux-apk_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-roblox-girl-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-fly-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-khaos_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/hack-roblox-prison-life-v2-02_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/cerberus-hack-program-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/top-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-paste-data_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-hats-and-gear-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-free-robux-download-no-survey_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/download-hack-roblox-adopt-me-money_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_off00002ed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED1 22492 bytes
SHA-256: 5de3a979eb17593202c03b123ede46918c4a34555eba4c965977f522ce96af6a
font_01_sfnt_off000060aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AA 19228 bytes
SHA-256: 4d88fc67239930ebb6e252626719041d811c1ea91157d3c493162705e3bc6d9c

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