Malicious PDF — malware analysis report

Static analysis result for SHA-256 d186f8be063e1b88…

MALICIOUS

PDF

41.1 KB Created: 2021-05-12 19:00:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 9e2d43ca9f8623759bb677eb8cc64b29 SHA-1: 89c712f9f610f624faa1cfe23ff8cd7ca043cd10 SHA-256: d186f8be063e1b8846ae625718aaeb190264d78ef715ad56c3a2d5549e3dcbfe
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 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-daily-free-spin-app-game-hack PDF link annotation
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/kachifpro_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/robux-sites_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/coin-master_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
stream_003_off000047f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F9 23880 bytes
SHA-256: c78d4c300fdfcf8c8f296b5e1e970a76288126176dd459189a7adc43fe5ed67a
font_01_sfnt_off00007e12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E12 18308 bytes
SHA-256: f9a3a46f76b0cae8a4d9bd0baf07f2a5aefd3f4554b846be65e0119e8f17791d

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