Malicious PDF — malware analysis report

Static analysis result for SHA-256 175caf854e7a54c8…

MALICIOUS

PDF

44.0 KB Created: 2021-05-14 19:07:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: de02b23ad2d760784957534b8f3286d2 SHA-1: b7be5f2b05ff100e1a51d936ba3c95f379e8817d SHA-256: 175caf854e7a54c8834b8bc15a327b4e01fa6c83257f970fa9a247c3e44c1d71
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising game hacks and free currency generators. The primary redirector URL is https://netcdn.xyz/app/406889139/hack-coin-master-nyc-game-hack, which is presented as a lure for game cheats. The document body and embedded URLs reinforce this theme, aiming to trick users into clicking through to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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.xyz/app/406889139/hack-coin-master-nyc-game-hack In PDF document text
    • http://kirikkalesmmmo.org.tr/images/roblox-lovenet_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/master-coins-free_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/more-robux_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004627.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4627 25220 bytes
SHA-256: 00c1abff4f9aa3294873debceccb0af46f92b15f3286ec103eb461913ebf6ac2
font_01_sfnt_off0000806d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x806D 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008a58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A58 17896 bytes
SHA-256: 6bda2244236a3c42e7a8523e9dc799500b38f97cf514babfc865537c80dbf03b

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