Malicious PDF — malware analysis report

Static analysis result for SHA-256 33eda539d164533f…

MALICIOUS

PDF

46.2 KB Created: 2021-05-15 11:41:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 20c8c82c9497ade3d316591d092cafbd SHA-1: 16639d50db8e24664327974b01bab053635daa35 SHA-256: 33eda539d164533f898f77ef69803fe9ec89c01a23ba07f38a0aefb85ef8797a
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 0.9432

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/431946152/free-robux-no-human-verification-and-no-survey-game-hack PDF link annotation
    • http://www.mediaxin.net/images/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://www.mediaxin.net/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.mediaxin.net/images/roblox-font-free_GM431946152.pdfIn PDF document text
    • http://www.mediaxin.net/images/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://www.mediaxin.net/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://www.mediaxin.net/images/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • http://www.mediaxin.net/images/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mediaxin.net/images/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://www.mediaxin.net/images/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://www.mediaxin.net/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.mediaxin.net/images/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.mediaxin.net/images/robux-generator_GM431946152.pdfIn PDF document text
    • http://www.mediaxin.net/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mediaxin.net/images/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.mediaxin.net/images/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://www.mediaxin.net/images/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.mediaxin.net/images/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mediaxin.net/images/hack-master-coin_GM406889139.pdfIn PDF document text
    • http://www.mediaxin.net/images/coin-master-home_GM406889139.pdfIn PDF document text
    • http://www.mediaxin.net/images/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47AB 25140 bytes
SHA-256: 5ddfe4f582569ce10bb6adb6d558a1c939724701c031c0ee0732416ca5f66afc
font_01_sfnt_off000081ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81AD 3992 bytes
SHA-256: 43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd
font_02_sfnt_off00008ed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED3 19328 bytes
SHA-256: d2b84e9593d62b74a5e72ac2cd252f85880eba3e829d4f4451320fa49886136c

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