Malicious PDF — malware analysis report

Static analysis result for SHA-256 18eeb51375325186…

MALICIOUS

PDF

36.3 KB Created: 2021-07-03 12:57:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: eb8c68683e0663bb87ec364b6dc14fde SHA-1: 6464729cadcd3fe35e88cd06728f34cdc32a87f0 SHA-256: 18eeb5137532518646aeb3a108440b3500ce85b659dfc98a63905f99e04d8f9a
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-spin-generator-without-human-verification-game-hack PDF link annotation
    • https://pustaka.mic.sch.id//repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/free-robux-giveaway-no-hacks-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-and-fortnite-bee-swarm-sim-free-eggs_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-r-cheats-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/all-roblox-games-that-actually-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-cheat-the-idle-roblox-system_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-get-free-robux-on-roblox-2021-no-hacks_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/do-you-want-some-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/get-robux-today-free_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-barren-hack-script_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-only-for-free_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/the-society-of-magic-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-redeem-code-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/impact-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-games-free-sign-up_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33AF 23752 bytes
SHA-256: 55364f2381e6bf87797de104a53e03e5df120a3d10da1394eba71b6deb10e949
font_01_sfnt_off00006945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6945 19072 bytes
SHA-256: 191e07fd5980204e59abff19620bfdebbf61c0f8144391cdce22fe66b0484207

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