Malicious PDF — malware analysis report

Static analysis result for SHA-256 65c0fcd062d0fcc3…

MALICIOUS

PDF

46.9 KB Created: 2021-05-16 01:33:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4afa4f550d122de160dd095f2172ad2b SHA-1: 993f70c547bd400a203be1d44cf1578123ac38a7 SHA-256: 65c0fcd062d0fcc3b64ac255e3d5f2edc3212f682d4fab35ba5193e1085e908a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The primary malicious link identified is https://netcdn.xyz/app/431946152/how-to-get-free-robux-on-iphone-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/how-to-get-free-robux-on-iphone-game-hack In PDF document text
    • http://guimaq.com.br/images/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://guimaq.com.br/images/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/free-coins-and-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://guimaq.com.br/images/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/freespinandcoin_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/robux-only_GM431946152.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
stream_003_off000048c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C1 26468 bytes
SHA-256: cadb05c74220c060577820b68c74c449e561bc977c876bbca91b792bf353d7bb
font_01_sfnt_off000086c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C4 3772 bytes
SHA-256: e00a09e4410690c1c05d00d0ed1725085d1955392e7c6e5ef72d4b21bd2a5fdb
font_02_sfnt_off000093ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93EA 18624 bytes
SHA-256: 22426b865d680281cc4768d4f40ba725f59186fc510e45c7c95a1e6bea128c39

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