Malicious PDF — malware analysis report

Static analysis result for SHA-256 285978750112defc…

MALICIOUS

PDF

41.1 KB Created: 2021-05-16 07:12:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d51f6d6bb1762f91665ef47d040501f4 SHA-1: 0404493d32d392203e6db73a1a671c32c2d0ee6a SHA-256: 285978750112defc838e6c103e257247250e2ba53a516166d5f0661dbfad6cb1
142 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure and a fake-CAPTCHA lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • 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.
  • 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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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-free-spins-and-free-coins-game-hack PDF link annotation
    • http://sbm-nn.ru/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-spins-coin-master-twitter_GM406889139.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_003_off0000487f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x487F 24352 bytes
SHA-256: ed36b169a133780600b9d044fe8e7efc13134330eb89159e60efa83e830aaea8
font_01_sfnt_off00007eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB0 18060 bytes
SHA-256: 7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7

Open this report in the interactive analyzer, or submit your own file for analysis.