Malicious PDF — malware analysis report

Static analysis result for SHA-256 387cf0b2637297e7…

MALICIOUS

PDF

33.8 KB Created: 2021-07-08 12:05:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 9931bc8ebe29252023375c9fc0c86593 SHA-1: 4bc240de00baa9cc4cd08851b122e4dc72185535 SHA-256: 387cf0b2637297e7672bdfbc68f5bb2c059189e10486c33c165864045ba6ff46
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.tw/app/406889139/mcpe-master-hack-coin-apk-game-hack PDF link annotation
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/100-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/coun-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/roblox-money-hack-no-survey_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/roblox-bgs-cheats_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/wurst-115_GM479516143.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/how-to-make-a-free-shirt-in-roblox-no-bc_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/free-robux-no-verification-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/base-wars-roblox-cheats-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/coin-master-hack-download-ios_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_off00002fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB7 22436 bytes
SHA-256: c7eedbccf16d4e5f09a0ec30d823c99d4f8d6c433a396e055bbb312acc6ac7f8
font_01_sfnt_off000061c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C8 18180 bytes
SHA-256: 87072597483cb08a2f983c489319c3f89934693df86524fd72547e99bba744fc

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