Malicious PDF — malware analysis report

Static analysis result for SHA-256 45b2a7013bf0e83f…

MALICIOUS

PDF

45.1 KB Created: 2021-05-19 11:14:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 164ea62aff75179d800c1e5ee35bd64e SHA-1: 7c2a2996ae04d3f931744e3bfe89bb37641929cf SHA-256: 45b2a7013bf0e83fce18fda9787e8936d3173713c6e638c678cc22e953f975a8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users with lures related to game hacks and free currency generators. The primary link directs to 'netcdn.xyz', which is flagged as a malicious redirector. While no scripts were extracted, the embedded links and heuristic firings strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/431946152/can-u-get-free-robux-game-hack In PDF document text
    • http://gc-sistemas.com.ar/images/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/minecraft-client-download_GM479516143.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/daily-coin-master-free-spin-apk_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_off000047bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47BC 25524 bytes
SHA-256: 603c09ff600a31f4e2d1fd0ef9a794be44dd3908dba8b295a34579561d6ffe86
font_01_sfnt_off00008310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8310 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00008cc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC1 18532 bytes
SHA-256: 35bb0f01f69d1b5e790ed5f4c0eeb98998139975dc1eb58b588dc01b9002bbc1

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