Malicious PDF — malware analysis report

Static analysis result for SHA-256 f743d22eb272154b…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 06:14:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a2de64afc9c55eb284e5b3af37fc78a7 SHA-1: 4dbd50e84b1014f3685d6575490ef9b0598aa4fc SHA-256: f743d22eb272154b5bbf2823ab57cef8c323216fd9a00b337602beccc0dbe7d4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic indicating it links to a 'free generator / game hack' redirector. The embedded URL, http://netcdn.tw/app/406889139/moonactive-free-spins-game-hack, is the primary indicator of this lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering tactic to direct users to potentially malicious content.

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/406889139/moonactive-free-spins-game-hack PDF link annotation
    • https://perpus.upp.ac.id/digilib/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-villages_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/pagina-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-jailbreak-cheat-engine_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/robux-adder_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-game-hack-kaise-kare_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/code-roblox-robux-free-2021_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000323a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x323A 23020 bytes
SHA-256: e15016fba75202c38c58dd672a494de8c8c5e773fac240f4ce68308e8fe87883
font_01_sfnt_off00006607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6607 18288 bytes
SHA-256: 9cb413fee599b756ba85b223fa28fd67b573b4b10bafd0121ae3f2b65a066c18

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