Malicious PDF — malware analysis report

Static analysis result for SHA-256 52107b49cc31fe34…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 19:04:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 81475933d33d0bbc88682e32d195dd32 SHA-1: 8ac99cb7dbcc14a2b5ad33954ffd6184f4b82026 SHA-256: 52107b49cc31fe34c3d2cf45dff333d351a3d63145087c9b15a482f81b9eb3e5
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/coin-master-hack-online-generator-game-hack PDF link annotation
    • https://pustaka.mic.sch.id/repository/how-to-get-free-robux-ez-ways_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/get-free-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-cheats-on-girlfriend_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-hack-painis_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-free-battle-royale_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-make-free-face-in-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-get-roblox-items-for-free-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/pubg-uc-trick_GM1330123889.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/hacker-roblox-portable_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-how-to-get-free-robux-on-laptop_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-hack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/neon-hack-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-get-everything-free-on-roblox-2021-april_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/hack-roblox-generator-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/getbucks-freecom-robux_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
stream_002_off0000304f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x304F 22536 bytes
SHA-256: 04894a76718b44f7544402afd6084f2df10b8bf21f9f8cf8b093bf5698aa43f8
font_01_sfnt_off00006292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6292 18080 bytes
SHA-256: e55d1a2f0f041c55a991468c0032cf052e550fbb2d425cc59def2f9f0cd39345

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