Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ca396a9a53b00db…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 09:24:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7168678c19d80089c7b17ffa05e8e933 SHA-1: 18c3ccef69648f09f0ca0110344d6d11d577b22e SHA-256: 7ca396a9a53b00dbc1e4c739eeb21a41dd7430ae57c62549a477dcdd515d9c0a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9865

Heuristics 4

  • 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.
  • 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/406889139/coin-master-free-spins-apk-game-hack PDF link annotation
    • https://htdvn.com/public/upload/files/roblox-free-draw-tutorial_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/tiktok-free-or-not_GM835599320.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/tiktok-free-view-kreatif-lucu_GM835599320.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-spins-from-coin-master_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_004_off00004fed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FED 25116 bytes
SHA-256: b96d267311f0a10487b4b28032e37aa1dc49966487497964ab3791e0fbedc79a
font_01_sfnt_off00008899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8899 18056 bytes
SHA-256: 4a0975cb4ff59b90613a77ae23c76f45b98fe93665a9537e2ed5b6c7d8755f19

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