Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0d880b1620eb9b6…

MALICIOUS

PDF

34.3 KB Created: 2021-06-19 05:14:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 61ae7ed6198291667212f8c197e357e0 SHA-1: 6bd62bf82fa473be149b0914b3c94664564fce82 SHA-256: a0d880b1620eb9b6ac0c40343f7df523f4ba9cfa54db74f1ed23bca35cc68d2a
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and document body text that advertise free game hacks and in-game currency, aiming to trick users into clicking malicious links. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms that at least one of the embedded URLs, specifically http://netcdn.co/app/431946152/free-roblox-hacking.com-game-hack, leads to known malicious redirector infrastructure. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.
  • 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 http://netcdn.co/app/431946152/free-roblox-hacking.com-game-hack In PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/robux-app_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/fbchampion_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/how-to-get-free-robux-fast-2021_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/how-to-hack-friends-roblox-account_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/roblox-bandit-simulator-hacker-crate_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-csgo-hacks-2021_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/how-many-did-the-hackers-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/coin-master-level-3_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
font_00_sfnt_off00002f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7C 22164 bytes
SHA-256: 27be1a488efda8428eac473d196445c45834c2e09909806a17b9448dec8ccb01
font_01_sfnt_off0000609d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609D 19268 bytes
SHA-256: 22cefc9220482b09482fb61aa0da257ca78e30b93d30a9761cf0c41855ffe97b

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