Malicious PDF — malware analysis report

Static analysis result for SHA-256 16f95237f929d820…

MALICIOUS

PDF

44.4 KB Created: 2021-05-15 00:04:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b7c15279f6fc00db0c4d4914fce4a869 SHA-1: 61144acf99d1f39947ea676be903f2737fc9b56b SHA-256: 16f95237f929d820ccf50db854e7e634f71253b0406e890954804319f8709d10
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple links to external websites, with one prominent URL pointing to a 'how-to-hack' guide for an online game. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs and a 'download button' heuristic suggests a lure to download further malicious content or engage in phishing. No scripts were extracted, but the overall pattern indicates a social engineering attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/how-to-hack-someone.
  • 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
  • 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/how-to-hack-someone In PDF document text
    • http://fmbompastor.com.br/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-script_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-free-spins-link-today_GM406889139.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_off0000495a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x495A 27228 bytes
SHA-256: 1b23cf8d54e921f7447750ab803b48087a0a16273db731b77216f856c32e40f8
font_01_sfnt_off0000895b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x895B 18912 bytes
SHA-256: 9f53b096903929334954973b1f22b9a4d0ba47253044b0676b0b61e1e4f10122

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