Malicious PDF — malware analysis report

Static analysis result for SHA-256 797dbb992b39b7c0…

MALICIOUS

PDF

34.1 KB Created: 2021-06-30 20:05:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 0c842494c872a8c7aac1ae760fcd391b SHA-1: 8d347facc4006fa3b47ae93b7df8c00ae4c500e9 SHA-256: 797dbb992b39b7c0efd121e39f22c9720445956832578ef5179b49c0639baeba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of game hacks and free items to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or downloads. The document's content and embedded URLs strongly suggest a phishing or scamming attempt.

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/zoo-tycoon-cheat-codes-roblox-game-hack In PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/real-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-roblox-items-catalog_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/cheat-engine-64-roblox-windows-8_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/horse-valley-beta-roblox-maze-cheat_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/videos-on-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/delta-lite-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-accounts-free-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-speed-cheat-engine_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-robux-for-free-on-ipad-easy-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-hack-roblox-on-ipad-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-cheat-enginefor-rodebix_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-no-human-verification-or-survey-2021-on-ios_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/game-roblox-free-online_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/sign-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-hack-on-ios_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-hack-roblox-and-get-unlimited-robux_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_off00002e34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E34 22188 bytes
SHA-256: 7912f203f09201dc536862b4cf5ffa304ab2eaa0ccd4d218832d901c7c7a5ae2
font_01_sfnt_off00005f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6B 19204 bytes
SHA-256: 2a9fbdca2794706bc94979c5f4d8752a175e0479b18724cb5d54cf5612c2bf25

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