Malicious PDF — malware analysis report

Static analysis result for SHA-256 8945fa63b9a22c6d…

MALICIOUS

PDF

43.5 KB Created: 2021-05-20 02:51:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b48a55f165fb35a99297b45cbc6f019c SHA-1: b7cd05d192916c34cc4247b8245f9c5f2e78220d SHA-256: 8945fa63b9a22c6dd98b35efb613fb624ff8d3036ba80d5668785a632c9cbfb9
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 generators' to lure victims. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-master-coins-game-hack. This indicates a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/coin-master-coins-game-hack In PDF document text
    • http://apteka-ot-sklada.com.ua/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/easy-robux-today_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/pubg-uc-quora_GM1330123889.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/robux-in_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/pokemon-go-free-85_GM1094591345.pdfIn 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_003_off00004bc7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BC7 26680 bytes
SHA-256: aa3a739bd4291e3fc4b04baaca44382fbc0d640feea3831d50140db172f47a1a
font_01_sfnt_off000089d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D7 17544 bytes
SHA-256: 5ee316c89f58fa7ece53e10d1822e70a80b2e7ece9f31707ca69690d36fdc75d