Malicious PDF — malware analysis report

Static analysis result for SHA-256 f68d8b46484c2772…

MALICIOUS

PDF

45.4 KB Created: 2021-06-03 11:31:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: ea532db7509e11fbed716609b32bec49 SHA-1: a256bd2c1e974b889155e2fa81477c204130fda8 SHA-256: f68d8b46484c27728788219b8485b0b6483181605bf115d2eada418431d53d3d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristics suggest a lure for 'game hacks' or 'free generators', which is a common social engineering tactic to trick users into downloading malware or visiting malicious sites. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/431946152/how-to-get-hacks-on-roblox-game-hack In PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-often-pubg-uc-reviewed_GM1330123889.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/tiktok-free-online-videos_GM835599320.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_off000052ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52EA 25844 bytes
SHA-256: a65892eda3a24dc48dfa15522abebfe3515a1b1dbe5dcd3d3b7c0b04600a0694
font_01_sfnt_off00008e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E52 18452 bytes
SHA-256: ed539d80bc369dd702df4747cf339a34006ca6a67146fd9e518381a10bf40547

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