Malicious PDF — malware analysis report

Static analysis result for SHA-256 757f63a2f3613271…

MALICIOUS

PDF

42.4 KB Created: 2021-05-13 03:30:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 95de86b716cb85ac8cf5b97cac5ad08b SHA-1: 559976df59c7f20e152e88b5d5eb98c76adb52e0 SHA-256: 757f63a2f3613271724d14670ac714c35a5c0ac437dcf326c93ff8d01bc7d460
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of game hacks and free currency to entice users. It contains a high number of external links, many pointing to other PDF files, suggesting a link farm or SEO manipulation tactic. The primary URL directs to a "coin-master-mod-apk" page, indicating a potential attempt to distribute malicious applications or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-mod-apk-latest-hack-with-unlimited-free-spins-game-hack PDF link annotation
    • http://autenticohostalsalou.com/images/best-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/free-roblox-acc_GM431946152.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/roblox-a_GM431946152.pdfIn PDF document text
    • http://autenticohostalsalou.com/images/free-minecraft-account-and-password-generator_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_off00004928.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4928 24472 bytes
SHA-256: befa09de156a276290e0debd28c86b6d6fad098a1db0e083f4e296c37081e918
font_01_sfnt_off00008120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8120 19116 bytes
SHA-256: ec39511f044db0039b033061d0c06de0ea4b06e85abf4e03074bae323e4248a1

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