Malicious PDF — malware analysis report

Static analysis result for SHA-256 05640da9007e9c6f…

MALICIOUS

PDF

34.6 KB Created: 2021-06-19 01:12:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8df7b80afeb8f1f7b1a3bb439bd1082e SHA-1: a9ff9f2ac091b766249142a5bf41a76e3c31e469 SHA-256: 05640da9007e9c6f7f4893dfa16af717164bd9e4fa22e61cf98efc9595f8a60f
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of links, many of which are related to game hacks and in-game currency, indicating a link farm or phishing attempt. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically points to a lure for game hacks. The document's structure and embedded URLs suggest it is designed to redirect users to potentially malicious sites that may host further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/roblox-tower-battles-credits-hack-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-exploit-synapse-x-free_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-free-robux-codes-2021-wiki_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/are-you-cheating-on-your-roblox-girlfriend_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/fashion-frenzy-roblox-free-game_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-execute-script-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/infinite-jump-wearedevs-roblox-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/get-coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-free-packages-download_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-coin-master-with-game-guardian_GM406889139.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_off000031ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31CE 21644 bytes
SHA-256: 9d119332e501bef5bca12b3ba348b4fd935d262d509450b0ff46ecdee2038cdf
font_01_sfnt_off0000615a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615A 19220 bytes
SHA-256: 326819ccaf69e4f64d2426fcb0a4986bc94436b5aef103a3edaf0dab891e0afa

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