Malicious PDF — malware analysis report

Static analysis result for SHA-256 61e8c3386655e158…

MALICIOUS

PDF

49.4 KB Created: 2021-06-04 04:09:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e6b6d0a8aea62a5e1c62af8fd336eb7b SHA-1: 3012f7cf028d93cac48f47bf9f98c55b6e894826 SHA-256: 61e8c3386655e15835ef41ed6d9b2181e8c3889522e6e4fc5d39a8c36f2d207d
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 0.9796

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.online/app/431946152/free-robux-generator-without-doing-anything-game-hack PDF link annotation
    • http://www.library.gkigadingserpong.org/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-only-username-no-human-verification_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005128.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5128 28060 bytes
SHA-256: 1c9212278ea18c8ccff7ecab050d27ab76b9549a175bcaeb087645cd070b9ac2
font_01_sfnt_off0000913b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x913B 2824 bytes
SHA-256: 1d0cb1023eaa225682b8e7a2c8df4e4c96545ba7eedaf3d9844e51183e9ca189
font_02_sfnt_off00009ae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AE8 19464 bytes
SHA-256: 79f55673b7da23263b83a37dde36466f6d2ebf36334d920565fca1e2c62801f8

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