Malicious PDF — malware analysis report

Static analysis result for SHA-256 c695a7d5fd8f236d…

MALICIOUS

PDF

33.5 KB Created: 2021-07-04 08:12:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fdc04f845f7e942cd63499771e98d053 SHA-1: 916fc6a79021183d4bc9c5fe735c3f076e7b9b27 SHA-256: c695a7d5fd8f236de38f1b5952616eac5eb85c88b64fab1b32e030359ae146c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to known malicious redirector infrastructure, specifically http://netcdn.tw/app/406889139/kachifpro-game-hack, which is presented as a lure for game hacks. The document body and embedded URLs reinforce this theme, suggesting a phishing or scam attempt to redirect users to potentially harmful sites. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a malicious redirection workflow.

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.tw/app/406889139/kachifpro-game-hack In PDF document text
    • https://planetzoe.hr/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/tiktok-free-zone_GM835599320.pdfIn PDF document text
    • https://planetzoe.hr/files/hack-roblox-origin_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-hack-android-no-root_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/hack-de-robux-en-roblox-2021-diciembre_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://www.planetzoe.hr/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/roblox-games-free_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://planetzoe.hr/files/get-free-robux-with-javascript-and-raw-paste_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-to-hack-roblox-admin-commands_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-spins-and-coins-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_off00002e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E24 22660 bytes
SHA-256: 173a2fb7a94fc703ef1c498d29b6bc1c8d11dacb1e0c296a4ba6c63ec86253a6
font_01_sfnt_off000060f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F4 18072 bytes
SHA-256: 72a3da90a05afc5dc46f93167f9d09aeeb78081726754e710800ebd664932104

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