Malicious PDF — malware analysis report

Static analysis result for SHA-256 b68c915e354ab1dd…

MALICIOUS

PDF

41.7 KB Created: 2021-05-11 17:01:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 18217ccdd6b4a721cba4a67e9933d341 SHA-1: e419e09b1f3f6d9f4398331f4ba454db49f74c1d SHA-256: b68c915e354ab1ddd5c5c4e7a0c1ede29bd5e189c951da8643eb0119782c5059
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/431946152/roblox-robux-hack-game-hack PDF link annotation
    • http://electro-nrg.com/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-tips_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-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-hack-fast_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-without-verification-for-iphone_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-free-master_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/robux-download_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/free-robux-gift-card-codes_GM431946152.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/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://electro-nrg.com/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://electro-nrg.com/images/free-pet-food-on-coin-master_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_off0000473f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x473F 24824 bytes
SHA-256: 57fb576ef3434bd1ee07976011560734bbecae1b1dad4cdd0d43f55f664b759a
font_01_sfnt_off0000808c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x808C 18320 bytes
SHA-256: fa424f86a9ddd472d540fc30f07119be4b576a9306b5f7bb82c207f2bb92a2b4

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