Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d3518d3eae03d2…

MALICIOUS

PDF

44.5 KB Created: 2021-06-07 19:25:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 963468110768411d249f8da454bcd3c9 SHA-1: ab564f457a443976bdbcaf45cbd80c880c5b62bc SHA-256: c5d3518d3eae03d2d70a921c6d480c1c513d15bee631ab4098d3d47e0e45a8af
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting 'game hacks' and free in-game currency. The document body and heuristic firings confirm the intent to lure users to these sites, which likely serve as a distribution point for further malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/how-to-get-free-admin-on-roblox-hack-game-hack In PDF document text
    • http://shiny-nn.ru/images/mc-hacks_GM479516143.pdfIn PDF document text
    • http://shiny-nn.ru/images/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/how-to-make-yourself-look-like-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://shiny-nn.ru/images/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://shiny-nn.ru/images/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.bandicam.comIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004c80.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C80 27464 bytes
SHA-256: b2393874bc7ea68e33c279761ba5e75a2ee09a4b669cc1ca3d80120d5c7cc55f
font_01_sfnt_off000088ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CE 19168 bytes
SHA-256: 6ddc8a31e0efd535d6d1fcef166a0ef8f5e7eb35eac9a2e33e92eece2d71c2a5

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