Malicious PDF — malware analysis report

Static analysis result for SHA-256 b229589b8f7732b5…

MALICIOUS

PDF

49.4 KB Created: 2021-06-11 06:26:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6f85c85e3f7e105311ddab4c76ad8130 SHA-1: 3e324ad700803e1a4a6042e463a9b6f73b1c6726 SHA-256: b229589b8f7732b53aef9f78ceb20ee1d7621734fa6a60c67159a50f5e25e21f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to known malicious redirectors, disguised as 'game hacks' or 'generators'. The primary redirector URL is https://netcdn.tw/app/431946152/free-face-roblox-face-anime-girl-blushing-game-hack, which likely serves as a lure to download further malicious content or lead to phishing pages. No scripts were extracted, but the heuristic firings strongly indicate a malicious redirector campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/free-face-roblox-face-anime-girl-blushing-game-hack In PDF document text
    • http://www.ocic.hr/files/roblox-free-body_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/can-pokemon-go-free-promo-codes_GM1094591345.pdfIn PDF document text
    • https://www.ocic.hr/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/roblox-sonic-costume-without-robux-and-free-youtube-vid_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/robux-free-co_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/how-to-watch-any-movie-for-free-tiktok-hack_GM835599320.pdfIn PDF document text
    • http://www.ocic.hr/files/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://www.ocic.hr/files/hack-coin-master-apk-358_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52C1 26596 bytes
SHA-256: d117be73ddf4ca7a96052a079dc8a056d2bda9b3b14f1c1be2b28474caa5c0de
font_01_sfnt_off00008f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F36 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009c48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C48 19148 bytes
SHA-256: 7637265f39a6bf85ad374dfad62303713f38abf7f80da4e9a8babb62d4edc013

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