Malicious PDF — malware analysis report

Static analysis result for SHA-256 73c6863855af28dc…

MALICIOUS

PDF

45.7 KB Created: 2021-05-30 23:05:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6f38ec7179f3a5c539a87d8c17a235aa SHA-1: 9aea13a3dd6f8124645f584c20a6fcbee06aeb4b SHA-256: 73c6863855af28dcc710a9c260e20ce9d7aa6d464917b5946c7bfa32b1dd0cb3
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 0.9580

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/free-modded-minecraft-server-hosting-game-hack PDF link annotation
    • https://ilya.ro/wp-content/uploads/fsqm-files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-robux-app_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-tiktok-app_GM835599320.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-tiktok-video_GM835599320.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-tiktok-like_GM835599320.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-tiktok-comments_GM835599320.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_off0000529c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x529C 26356 bytes
SHA-256: 9064ac121af251ee023af1b174f8d713ee05bbf28c9b7452a7d94fa0171b1ba1
font_01_sfnt_off00008fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA0 18284 bytes
SHA-256: 4ae19380f71872a59bca81a6826a2f1ac99dae3e110f9987d961b4518a9677d8

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