Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d99152d7a65f62f…

MALICIOUS

PDF

45.6 KB Created: 2021-05-14 19:09:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 225ada1addf010863b630a870d1576cd SHA-1: c0a680c445efb9cb6831e5ec5e214ed04587fbad SHA-256: 0d99152d7a65f62f76828e6839b15da9492ff1aac90263a50562384f7c505276
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 0.9507

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/minecraft-online-free-no-download-game-hack PDF link annotation
    • https://nature-air.com.tw/upload/files/jailbreak-script_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/roblox-rules_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/roblox-free-pants_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/what-is-robux_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/minecraft-client_GM479516143.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/coin-master-free-spins-link-2021-twitter_GM406889139.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/robux-cheat_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C5 26936 bytes
SHA-256: 19f7d3efac5c5b27878d06471030a70c04a9f9350f9d91586889c371a77e68af
font_01_sfnt_off0000859e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859E 2884 bytes
SHA-256: 33fafba5b11d6858d7ba2b4886e0ea5de9791364e56f090dc8583ce319a93e0e
font_02_sfnt_off00008f84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F84 18292 bytes
SHA-256: b061ada675b676782f5f9f5eef39691e0700ad1698d2269622484eea1080e831

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