Malicious PDF — malware analysis report

Static analysis result for SHA-256 d13320095cb20a60…

MALICIOUS

PDF

45.3 KB Created: 2021-05-14 02:16:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: ee72e770667784d412c5ac7ad9e5dad1 SHA-1: 1fcd5383a11a62b2826ffc102f5945678abb6b9c SHA-256: d13320095cb20a60adeff6e75f3f44e6b88c545c19c55a42147e6463f848f417
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, under the guise of offering free Robux. The heuristic firings indicate that the PDF is designed to redirect users to potentially harmful content, likely a scam or a phishing page. While no scripts were explicitly extracted, the embedded URLs and the nature of the lure suggest an attempt to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/to-get-free-robux-game-hack In PDF document text
    • http://ggmtc.net/userfiles/files/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-g_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-re_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-robux-microsoft_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_off000052f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52F0 26948 bytes
SHA-256: 8ae6ac2e26ed899bafd1b6749b0e05d6bc23b08eed8e784dbc84962836278f54
font_01_sfnt_off00008f52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F52 18120 bytes
SHA-256: 5233d5aad1bcdd77905869674ceee15891b0fc77671f16174d37808cf9f58ee1

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