Malicious PDF — malware analysis report

Static analysis result for SHA-256 341c189676bafc71…

MALICIOUS

PDF

33.2 KB Created: 2021-07-06 12:01:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0b3c82e1622b2e955096fac80655b82c SHA-1: df1c80a847915a65b72b7ceab9623c2fa7f9be4b SHA-256: 341c189676bafc71c762630499a98ca2c624d55f2a8f30e9307a6d583488fdf7
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-server-hack-game-hack PDF link annotation
    • http://global-brand.net/userfiles/files/junio-2021-hack-robux-en-roblox_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-roblox-custom-templates_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/pubg-uc-vietnam_GM1330123889.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/pokemon-go-free-coins-code_GM1094591345.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/new-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-jeux-roblox_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_off00002da5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DA5 22380 bytes
SHA-256: 3d4ca5bbc6e04139fff007d01f135a2e761b043a5141f3bd86e12fcb9bbdff3e
font_01_sfnt_off00005f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5E 18120 bytes
SHA-256: f784733b4861a5571dacf308dff6414d50b5d345dfd948ae0acb583631775834

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