Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dd0b5d8f768f182…

MALICIOUS

PDF

35.0 KB Created: 2021-07-08 08:44:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: d63eedc5913070903f60ff657c9d5d34 SHA-1: 6cfa06260403a5e13038af20b844e847d56df904 SHA-256: 6dd0b5d8f768f182a7f3cb6a942dad27a3fc8a7f821c07fcb67067bc9d926c59
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators for popular games like Roblox and Coin Master. The primary redirector URL is http://netcdn.tw/app/431946152/roblox-cheat-codes-list-game-hack, which is flagged as a known malicious redirector. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting potentially harmful sites.

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.tw/app/431946152/roblox-cheat-codes-list-game-hack In PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/cranberry-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-roblox-hack-inspect-copy-and-paste_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-roblox-admin-exploit_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/spin-and-coin_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/roblox-fun-com-free-robux-generator_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_off000032af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32AF 22308 bytes
SHA-256: 81362601d7e4f62c7c4291414ef4d7012f42fe58f13fb794b843f41fe8749e3f
font_01_sfnt_off000063e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E5 19048 bytes
SHA-256: b9b569613accc8cc54575bafa8c843d3dbc8b340e0f17fdca79e748f5cfc0ef2

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