Malicious PDF — malware analysis report

Static analysis result for SHA-256 5210d04d16412a44…

MALICIOUS

PDF

36.0 KB Created: 2021-06-29 22:58:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5cbd34d35498a164ec33b8f0f0265c2f SHA-1: 6d279bc1a0882bfa1825132b72805bbd9e6ce787 SHA-256: 5210d04d16412a4411503932206c7d790bbe2e45b77bf0ca5e019d15aaf812e6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure is a link to 'netcdn.co', which is flagged as a malicious redirector. The document body and embedded links suggest a social engineering attempt to trick users into visiting potentially harmful websites, likely for further malware delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/can-you-get-banned-for-using-cheat-engine-on-roblox-game-hack In PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/aincrad-online-free-beta-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/robuxian-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-change-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-dominus-messor-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/como-hackear-a-una-persona-en-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-nopde-engine-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/case-clicker-roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-images_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-robux-buy-inspecting_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_off000032d0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32D0 22948 bytes
SHA-256: 5b5213a5a5d9d37f291a5c58294ba16bf19411ca50ecb2c73ee634ba10b40215
font_01_sfnt_off00006666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6666 19516 bytes
SHA-256: b463e03e01fe08f120675dabc9a90a87a480504fe1620eb6376b44c83a038bf7

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