Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c7b7cba4143dd9…

MALICIOUS

PDF

56.6 KB Created: 2021-06-04 00:30:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 6dd267093a9299a8ca6878c2c25fb1ab SHA-1: 7270134ede3f14f2e85164e973aca186a4eb3569 SHA-256: 95c7b7cba4143dd9a46be04004e21f2b1549d35044fc75625ec76b9d1ac85f7d
122 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 brand-impersonation credential phishing. 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 0.9407

Heuristics 5

  • 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.
  • 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.online/app/431946152/hack-roblox-game-tower-battle-game-hack.
  • 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.online/app/431946152/hack-roblox-game-tower-battle-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-free-hats_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-com-free-play_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005241.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5241 26144 bytes
SHA-256: df53c8c589ee9fcabefb0ce1a145e13faceff02f6c7c1d4eba2080b635532000
font_01_sfnt_off00008f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F44 8864 bytes
SHA-256: f474dd334e9b78aa9ec6f51b16c5535b2bc955ccb7b6c1a07f3717fc625e2163
font_02_sfnt_off0000ac2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC2A 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000b93c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB93C 18708 bytes
SHA-256: c674eb0c927c29d2ddf8dd8dbeb16641b899c67cae063092079bc8f7d6ceb7d6

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