Malicious PDF — malware analysis report

Static analysis result for SHA-256 34fe72e58fb99726…

MALICIOUS

PDF

44.6 KB Created: 2021-05-17 16:09:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bf75106278976dbcf87b648ce236c993 SHA-1: 0b9543995ac9c648fe29592e63604e55b1a8bc79 SHA-256: 34fe72e58fb99726705a18ec95381eae2d3966945d39c1a2ab4c4ceb7b654ab3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure for game hacks, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the PDF_GAME_HACK_REDIRECT_LURE heuristic confirms the deceptive nature of the content. The embedded URLs are likely part of a phishing or scam campaign to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/406889139/hack-coin-master-for-iphone-game-hack PDF link annotation
    • https://www.hotschool.com.au/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://www.hotschool.com.au/images/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • https://www.hotschool.com.au/images/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://www.hotschool.com.au/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • https://www.hotschool.com.au/images/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/how-to-get-a-free-minecraft-server_GM479516143.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_off00004a4a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A4A 24284 bytes
SHA-256: 55d540a084e1814e7550c16f32a4529b19f7e21af3ee1b3adf7984825dbbd244
font_01_sfnt_off00008220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8220 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0A 18220 bytes
SHA-256: a643bdf6fb2c46f92d7d27c645ae746f9817b2095321c6eed50ee62637779c53

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