Malicious PDF — malware analysis report

Static analysis result for SHA-256 0806a3896dabd3b1…

MALICIOUS

PDF

33.9 KB Created: 2021-07-09 02:04:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d85fc4997718a7d00f26882e0f6070d0 SHA-1: 84491098a1035264fcece69278144094e77293cb SHA-256: 0806a3896dabd3b144262bcad67ab0b94c1fe07ac63dc931434c5574c94b927a
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 0.9980

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 http://netcdn.tw/app/479516143/minecraft-116-free-download-game-hack PDF link annotation
    • https://www.knjiznica-oroslavje.hr/files/robux-free-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/www-rubux_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-roblox-invitation_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/cheat-engine-for-roblox-apocalypse-rising_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/roblox-inspect-element-free-robux_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/roblox-money-hack-download_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/ww-roblox-come_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-robux-generator-no-human-verification-real_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-hacks_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_off00002ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED8 22160 bytes
SHA-256: bc8a4c3628c2054c95ee109e1e40d4da6e7da0ae1918da5906ef47fdb4e02034
font_01_sfnt_off0000601d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601D 18852 bytes
SHA-256: c5567fa3bcb3d58c308c2338717d34c6e65ff434371c3860bee8e6483ac372f2

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