Malicious PDF — malware analysis report

Static analysis result for SHA-256 171c3e0c0890b589…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 02:31:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 4df66ba1078dfcce24fd0713010e92fb SHA-1: c95905b15fa469060cf0172a0d4055b29ae69410 SHA-256: 171c3e0c0890b58964f274aa462c35438952b31cf3e8ddacd7d5f962e44aa790
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links that are designed as lures for game hacks and free in-game currency. The primary link, http://netcdn.tw/app/406889139/coin-master-links-for-free-spins-2021-game-hack, and numerous others hosted on mtsn31jkt.com, strongly suggest a phishing or malware distribution attempt. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-links-for-free-spins-2021-game-hack PDF link annotation
    • http://mtsn31jkt.com/__statics/gudangsoal/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/can-i-have-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/roblox-robux-hack-generator-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/hack-one-piece-treasure-roblox_GM431946152.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/code-hack-robuxtext_GM431946152.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/roblox-trade-free_GM431946152.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/can-i-change-my-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/roblox-mad-city-cheat-codes_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C8 22744 bytes
SHA-256: 82e235f5914d587da68ef17464c742605c85aa1e6591cbe5b8a4b5cdfc0ad7a2
font_01_sfnt_off000065c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C2 18748 bytes
SHA-256: 8d119a4c648bdbcdb702e6b2637ce89b675d402599e3c746c9fba888505a2c80

Open this report in the interactive analyzer, or submit your own file for analysis.