Malicious PDF — malware analysis report

Static analysis result for SHA-256 747601f1bb1880a5…

MALICIOUS

PDF

42.8 KB Created: 2021-05-14 18:31:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 982c8884aff3a5967c0bead1bc9bbbdb SHA-1: 0b89aed46ed5cfa2b931f38723d7671cf728e73b SHA-256: 747601f1bb1880a549cccb61fc7f924862b87d02d6440845f2ba879eaa200edd
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and generators, specifically mentioning 'Coin Master Hack Blogspot'. It impersonates brands like Facebook and directs users to external URLs, such as 'https://netcdn.xyz/app/406889139/coin-master-hack-blogspot-game-hack', which is highly suspicious. The ML classifier also flagged this PDF as malicious with high confidence. The document's structure and embedded links suggest an attempt to trick users into visiting malicious websites, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/406889139/coin-master-hack-blogspot-game-hack.
  • 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-blogspot-game-hack PDF link annotation
    • https://www.littlerockholidayresort.co.za/images/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/how-to-get-free-unlimited-robux_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_off00004a8b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8B 25168 bytes
SHA-256: ed0c47a7a26c607fc24da97e6cac4f368779da6061656e9f21be414da3933b51
font_01_sfnt_off0000843f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x843F 18472 bytes
SHA-256: fc8f080a928efa05f6f52a1b05c74b51efc09eaaebbfb39b5178bed858eebb61

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