Malicious PDF — malware analysis report

Static analysis result for SHA-256 180f569f5671696d…

MALICIOUS

PDF

41.4 KB Created: 2021-05-10 20:37:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4f884cc2ae4a2720d9d6b3952cd92ee2 SHA-1: 6a82b59ac70061c3fc152036e615cf8633d87b8e SHA-256: 180f569f5671696de595f76a7ea33a2088aa460a040346db85ad23014ce8adf2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure. The embedded URL, https://netcdn.xyz/app/406889139/hack-coin-master-1-game-hack, is likely the initial landing page for a phishing or malware download attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious intent to redirect users to potentially harmful content.

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/hack-coin-master-1-game-hack PDF link annotation
    • https://flyingchalks.com/ckfinder/userfiles/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/coin-master-code-for-free-spins_GM406889139.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/wurst-client-download_GM479516143.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/rewardrobux-com_GM431946152.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/body-roblox_GM431946152.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://flyingchalks.com/ckfinder/userfiles/files/is-minecraft-free-on-nintendo-switch_GM479516143.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_off000048f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F2 24220 bytes
SHA-256: 0d29cb16514298054ff236c0a84f194f992fb96f278a085b8c14e6ef82735ef0
font_01_sfnt_off000080a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A6 17820 bytes
SHA-256: a92da5948b358c1444de2cd11ee08a13ae84b81ab982e265d18b9f82cd1c2753

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