Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a082e1db86cc88…

MALICIOUS

PDF

42.2 KB Created: 2021-05-13 11:03:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 2ffaf85721083d72cf6b9e6528dbbdec SHA-1: 52b8ae24484accb805c563d372b1d5811b6bbbb7 SHA-256: 44a082e1db86cc8824affe257942ef05993b78046640bd22c9ea8f285e0dfa1c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'game hack' and links to known malicious redirector infrastructure. The embedded URL 'https://netcdn.xyz/app/431946152/rape-simulator-game-hack' is designed to trick users into downloading potentially unwanted or malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/rape-simulator-game-hack In PDF document text
    • https://cleansui.com.tw/image/data/files/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-hack-apk-july-2021_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-roblox-boy-hair_GM431946152.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_off000047fd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47FD 25296 bytes
SHA-256: a66c805a517d6967b45de847506c989622a8c1833b317f7dc8192d7a36026600
font_01_sfnt_off0000823e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823E 18444 bytes
SHA-256: b480e4b898178c1e4e39aef83c0e1788f84f3d88de6057dcc401cfae57224147

Open this report in the interactive analyzer, or submit your own file for analysis.