Malicious PDF — malware analysis report

Static analysis result for SHA-256 d13d7e2197c48163…

MALICIOUS

PDF

41.3 KB Created: 2021-05-16 21:35:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 48a31127e68a64a2dcda76d1ba8d2419 SHA-1: 943e09c628e6a103866b6bac9eabf48b3229787f SHA-256: d13d7e2197c48163894db6da5f25151ab82eea5124b7e96c1e0a1ff202fa3abe
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free in-game currency, such as 'coin-master-free-coins-today-game-hack'. The ML classifier and specific heuristics for game hack lures strongly indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the embedded links are the primary indicators of compromise.

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/406889139/coin-master-free-coins-today-game-hack PDF link annotation
    • http://paro.net.ua/images/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://paro.net.ua/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://paro.net.ua/images/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://paro.net.ua/images/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://paro.net.ua/images/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/june-29-coin-master-hack-no-human-verification_GM406889139.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_off0000480b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x480B 24828 bytes
SHA-256: 6fc40eea77658a94b9eae7025ced34b1acfacd75db6e5a8735ca7011ba5f31b2
font_01_sfnt_off00007f70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F70 18064 bytes
SHA-256: e394056c4eb74bb544619b5782ef65607dab53e2149678f6173de5f10ac76a14

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