Malicious PDF — malware analysis report

Static analysis result for SHA-256 4584a1ad50d0aedf…

MALICIOUS

PDF

40.9 KB Created: 2021-05-11 05:12:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 1975bcf1fa9dc1847ada2d04dcae77e8 SHA-1: 631f5528c975928da9ca6b27f66fc8c1c5380231 SHA-256: 4584a1ad50d0aedff3bebb5831275ffe2e4bf8db45719e15c89a8d36b0476418
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 0.9971

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-hack-fast-game-hack PDF link annotation
    • http://electro-nrg.com/images/coin-master-hack-without-verification-for-iphone_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/robux-download_GM431946152.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://electro-nrg.com/images/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://electro-nrg.com/images/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_off00004546.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4546 24984 bytes
SHA-256: ff89e37d30338c4944b6795d95ab79b05cc15e0b0cd48a538cd096ae931d267e
font_01_sfnt_off00007eac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAC 17880 bytes
SHA-256: 2efdef3fd2f59ea81db594e192353872d83e83ccb870d2af1caf7a2c1a824eb1

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