Malicious PDF — malware analysis report

Static analysis result for SHA-256 b86191d31eec0850…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 01:00:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 23aa741d13f3c29e2d42eb73fd165981 SHA-1: 11d04c259c6b85bd47d0379c45238f511556fdec SHA-256: b86191d31eec08503fd6683bae38adad248507849589bae7803f30f26f73e5d5
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/479516143/toolbox-for-minecraft-pe-ios-game-hack PDF link annotation
    • https://www.sonestad.se/library/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/banning-hacks-for-khols-admin-house-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/pokemon-go-free-shiny-eevee_GM1094591345.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/robux-only_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-client-download_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-blogspot_GM406889139.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
font_00_sfnt_off0000301b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301B 22484 bytes
SHA-256: 65ba8e458b8fd6dcdd88c59c0bb869d79ca0d0dbf5186cdeb07e11ca8764b31a
font_01_sfnt_off0000615b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615B 18592 bytes
SHA-256: fecfbe307641de512b59b5989f2825d68be9e1756e870c3e96e7a472ec53942c

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