Malicious PDF — malware analysis report

Static analysis result for SHA-256 700a2ca8ae53d39c…

MALICIOUS

PDF

52.9 KB Created: 2021-06-09 17:40:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6fc842b8cbbadcd1aca95451badb0939 SHA-1: 7f3901a7d0ee2078b96af4af704f1abea48c2349 SHA-256: 700a2ca8ae53d39c7543ff1221f6551118585906c698e3ec966e44d6728130d3
122 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, aiming to trick users into clicking a link. The embedded URL and numerous other URLs point to sites offering hacks or cheats, suggesting a social engineering attempt to deliver a second-stage payload. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9844

Heuristics 5

  • 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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.tw/app/431946152/roblox-robux-hack-no-human-verification-2021-game-hack PDF link annotation
    • http://sbm-nn.ru/images/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-generator_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-free-download-android-apk_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-counter-blox-credit-hack_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/best-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-app-cheats_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005288.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5288 39188 bytes
SHA-256: 9ebf6311b37ef8f107074dbc9366d8104910aeaf16c5c2199975a2b2efa7d5c1
font_01_sfnt_off0000a990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA990 19344 bytes
SHA-256: 94de5879fbbc67120ecefd0031939e882875b675baa033c6666aeebda507971e

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