Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d677532a75cd053…

MALICIOUS

PDF

42.5 KB Created: 2021-05-12 14:03:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5ab90eeeef9a432f4225fb45948ceff5 SHA-1: eeb34fcc3ad3021a57544f0cf39ed1704ae89ed5 SHA-256: 2d677532a75cd053228236066707e4e25a8cf3c0785d14d3bba7a7a320664273
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/how-to-get-free-spins-on-coin-master-game-hack PDF link annotation
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/www-robux_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/toolbox-mod_GM479516143.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
    • https://e-learning-mtsalmusyarrofah-jakarta.com/__statics/gudangsoal/files/is-minecraft-free-on-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_off00004d1f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D1F 24160 bytes
SHA-256: c170213a2385bb255ae888c9b40e80980bf914749f7997cf39fa5973017df364
font_01_sfnt_off0000845b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x845B 18052 bytes
SHA-256: ea84a6236c2a6e621998df031dd6ced14717eafc49be4f8ccfac8b30b37a9d36

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