Malicious PDF — malware analysis report

Static analysis result for SHA-256 179461a48f5b1f16…

MALICIOUS

PDF

35.6 KB Created: 2021-06-29 06:09:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c8bff0ad272e8490b69dddaa87b93978 SHA-1: 1b7a23dcba46f96006929c412d1777dfeb83cf21 SHA-256: 179461a48f5b1f16a42389f4376b8d2653a2796bb9698138ee41e5e218c0c4ad
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free in-game currency or hacks, with a critical heuristic firing for a malicious redirector link. The embedded URL http://netcdn.co/app/431946152/10.000-robux-free-game-hack is likely used to deliver a second-stage payload or lead to a phishing site. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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/431946152/10.000-robux-free-game-hack In PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-broken-egg-in-roblox-rpg-world_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-aimbot-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-how-to-hack-welcome-to-roblox-building_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/account-hacking-software-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/what-are-the-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roblox-games-scripts_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-games-on-roblox-rpg-rainbow-swords-rpg_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-more-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/previous-next-free-roblox-pokemon-go-6-new-by-heavenloginplay_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-card-giver-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/hacks-for-coin-master_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_off00003396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3396 22588 bytes
SHA-256: 7f0f5ff715b11a7dbd17387580871e9e9c11a5a111897eaf8350d09255738072
font_01_sfnt_off00006639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6639 19060 bytes
SHA-256: 785c7e210a1780b2125656da4f81d97c19b1bb09db9150c4aa1ae66c39ddfc63

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