Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c0ebf067d53e02d…

MALICIOUS

PDF

42.6 KB Created: 2021-06-14 00:07:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d0b07fbbfe1d58dbc96d145af05007a1 SHA-1: 971ac19942536f28fc18268eeb4c81d160a63462 SHA-256: 8c0ebf067d53e02d571b1d071a25b726fda5853f2b952b24523c926f4cc8b8d9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector at http://netcdn.co/app/431946152/roblox-cheats-xbox-one-game-hack. The document body and heuristics indicate a lure for 'game hacks' or 'free generators', suggesting a social engineering tactic to trick users into visiting these sites. While no scripts were explicitly extracted, the PDF structure and malicious links point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/roblox-cheats-xbox-one-game-hack In PDF document text
    • http://www.library.gkigadingserpong.org/repository/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-card-number-free_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/get-free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/hack-roblox-android-lucky-patcher-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/pubg-uc-online-hack_GM1330123889.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-roblox-promo-codes-gen_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-online_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
stream_003_off000049d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D8 26120 bytes
SHA-256: 00d2fbe9f1e30daf6407ba684b5756d7058b9f57a160aca07f2710c88f5debf5
font_01_sfnt_off00008426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8426 18280 bytes
SHA-256: a389d0810f15afa2cad77dcbbcca3f3e52236b07cc5fed7988c532226f2864dd

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