Malicious PDF — malware analysis report

Static analysis result for SHA-256 246ada8ea1801122…

MALICIOUS

PDF

41.5 KB Created: 2021-05-10 23:32:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 92305cb04be74646e363a2ee38643c6e SHA-1: aafbd931217a5c9d37fc879c33d1adfbe3badc5c SHA-256: 246ada8ea1801122866c125d350a2afe48dee21f6428da8dc0f161442a0637af
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-mobile-game-hack PDF link annotation
    • http://onlinemusicsolutions.com.au/images/robux-for-offers_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/wurst_GM479516143.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/i-need-robux_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/coin-master-free-spain_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/roblox-play-as-guest-free_GM431946152.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_off00004901.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4901 24700 bytes
SHA-256: eebbb95f36168a9e735a24dc6474ad197b7b1e5bbcba3fe006b32b6dd0b03d1c
font_01_sfnt_off000080d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D8 17948 bytes
SHA-256: d85bac05a6c530c5997aad474557790cc9f5c9ab79cb3a200cdd52cd9bbf1317

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