Malicious PDF — malware analysis report

Static analysis result for SHA-256 b224d1424bd8b620…

MALICIOUS

PDF

41.5 KB Created: 2021-05-15 10:53:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f58c8a83dec03a067b2ce4da0825d38f SHA-1: 2564488d62b5cc392806e4b1180dc26b1ce32ea5 SHA-256: b224d1424bd8b620aebd53bc3b0798e2ab098e86b155e492ffafecdc10781b70
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick the user into interacting with a malicious link. The embedded URL `https://netcdn.xyz/app/431946152/roblox-cheat-robux-game-hack` and numerous other URLs hosted on `logisticgroup.co` suggest the document is part of a phishing or malware distribution campaign. No scripts were extracted, but the presence of external URLs and the CAPTCHA lure strongly indicate a malicious intent to redirect the user to a compromised site.

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/431946152/roblox-cheat-robux-game-hack PDF link annotation
    • http://logisticgroup.co/images/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • http://logisticgroup.co/images/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • http://logisticgroup.co/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://logisticgroup.co/images/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://logisticgroup.co/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://logisticgroup.co/images/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://logisticgroup.co/images/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://logisticgroup.co/images/robux-earning-sites_GM431946152.pdfIn PDF document text
    • http://logisticgroup.co/images/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://logisticgroup.co/images/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://logisticgroup.co/images/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • http://logisticgroup.co/images/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • http://logisticgroup.co/images/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://logisticgroup.co/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://logisticgroup.co/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://logisticgroup.co/images/roblox-free-items_GM431946152.pdfIn PDF document text
    • http://logisticgroup.co/images/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://logisticgroup.co/images/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://logisticgroup.co/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://logisticgroup.co/images/free-modded-minecraft-server_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_off000046c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46C1 24632 bytes
SHA-256: 49874f0b25fb61979a371180b2a6e98a645c5172015b4bcdafe875259e829313
font_01_sfnt_off00007f5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5B 18424 bytes
SHA-256: a96f43e65daf9623fa7b9bc259dd656765653644365f0d7d49582fe5e9502473

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