Malicious PDF — malware analysis report

Static analysis result for SHA-256 3014fdf9012826ae…

MALICIOUS

PDF

42.2 KB Created: 2021-05-16 08:29:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d3ff1482d203d298bb7ee3ed0e4d2c67 SHA-1: 67b9613f203d3c124814817f552ae427e6e6b4ae SHA-256: 3014fdf9012826ae9b2096faad797a649ced28da4b78d97360bdfcbe21ac71d9
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 0.9971

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.xyz/app/479516143/is-minecraft-free-on-nintendo-switch-game-hack PDF link annotation
    • https://www.donjastubica.hr/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.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_003_off00004973.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4973 25860 bytes
SHA-256: e514d5c79cff8faed396dd26c5122323dfc69d3e58611d191e2156e55b67b118
font_01_sfnt_off000082d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D1 18212 bytes
SHA-256: 88833f0f37aaf816a00c97530fc90e87f2df28a22611e5c00792867ae98cdb6c

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