Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bbbfb24531efe25…

MALICIOUS

PDF

42.7 KB Created: 2021-05-17 00:34:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: eccf21350778eb849d0a8bf11ed625aa SHA-1: 0bc8a5fdcea40baab6a6da86757241c1ff7ac5cd SHA-256: 2bbbfb24531efe25ceba08573d0f932267912a34d89dd7ff5ab580b55c76adba
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt to trick the user into interacting with a malicious link. The embedded URL and numerous other URLs point to sites offering hacks for games like Coin Master and Roblox, suggesting a lure for potentially unwanted or malicious software downloads. No scripts were extracted, limiting further analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-pc-free-game-hack PDF link annotation
    • http://algierimasonry.com/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/www-robux-us_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/how-to-hack-a-roblox-account-easy_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_off0000489a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x489A 26732 bytes
SHA-256: a2855aea227e85e26c92002dcd148c562859dfdbc6283f159207c0c4f32cc24a
font_01_sfnt_off0000855d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x855D 18036 bytes
SHA-256: d1e417f8400c4227caca57c80f12745841979f8062967c06e5a64cb2220bf511

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