Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d309e27b656f7d2…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 16:32:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e185bfd64d97ac5fed024b8135c7377c SHA-1: 837e37fe681682a9a499656d542117226a4ab573 SHA-256: 2d309e27b656f7d2cb9f1e8019d89f1f048939ad2e355b7c32b6170aa4e4051c
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-free-spins-coins-game-hack PDF link annotation
    • http://sd-olimp.hr/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/roblox-piece-hack_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/pubg-uc-unipin_GM1330123889.pdfIn PDF document text
    • http://sd-olimp.hr/files/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/what-is-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/robux-hack-911-pastbin_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/roblox-its-free_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/roblox-food-empire-money-hack_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-robux-hack-20217_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://sd-olimp.hr/files/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/minecraft-free-version_GM479516143.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/minecraft-free-apk-download-016-0_GM479516143.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_off00002f81.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F81 23068 bytes
SHA-256: 762227b9d21226a45902ccfe3e1a50e4489f9215bdfc93dd42e6ccbb8c556bd1
font_01_sfnt_off0000638d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638D 18176 bytes
SHA-256: c90cd52c690b3b1dd04b69356ad4f8db221968fb130a3d2ff71dcd50323a1a90

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