Malicious PDF — malware analysis report

Static analysis result for SHA-256 04dc618b0f2241d1…

MALICIOUS

PDF

34.6 KB Created: 2021-06-19 21:47:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2677fac5d9221c657e0489479552a4de SHA-1: 3f7036f4eab021c928c99f6ec188967136ebd0e5 SHA-256: 04dc618b0f2241d1dbd05a721faa2186701677dc3c80d7945ef31a9470920c26
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, including a primary lure to 'netcdn.co' disguised as a 'free generator / game hack'. This suggests the document is designed to redirect users to potentially malicious websites or phishing pages. The ML classifier also strongly indicated maliciousness, supporting the assessment of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.co/app/431946152/consle-free-robux-pastebin-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-uc-and-bp-in-pubg_GM1330123889.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-inspect-element-console_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-assassin-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-god-mode-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-hack-no-inspect-and-element-2021-not-patched_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-obb6_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-no-human-verification-or-survey-or-download_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
font_00_sfnt_off00002f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F44 22656 bytes
SHA-256: fc480a192e48381662de7d794b9baeb74fda135d0705aeec59ae0487de16e154
font_01_sfnt_off000061f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F6 19168 bytes
SHA-256: 80d760500c1627aebba9cf1f6ece14d899d50d008d01496892e65df696da2970

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