Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3672bcb31c0c1a7…

MALICIOUS

PDF

51.5 KB Created: 2021-06-03 09:06:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5fe84a60471bb0cb0f827926b1161e8c SHA-1: 8ed465d6efcf8b8f9b309d7cc216b55ba85c7d4d SHA-256: d3672bcb31c0c1a714f6804d5bd705b72856c6c68187eda9757e377814cb7e66
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a URL associated with game hacks and free generators, indicating a lure for potentially malicious downloads. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to trick the user into downloading a second-stage payload. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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/431946152/krnl-download-game-hack PDF link annotation
    • https://library.stikeswnpalu.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-group-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/play-minecraft-for-free_GM479516143.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_off0000553d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x553D 36792 bytes
SHA-256: 5f15333ef46c82a78aab16c2d9e60293d52762f038c0574f0374c02b21e02d72
font_01_sfnt_off0000a74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA74F 18152 bytes
SHA-256: dbb65ef0ffb84904a2a414ea884afe25cc8f4fd70881af36030310af4144951c

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