Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f5e2a5a9ae675d4…

MALICIOUS

PDF

34.5 KB Created: 2021-07-01 17:32:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 7921bc062a36fb34458976528f8c957b SHA-1: 0de11f8920b9443f7933e77f7154ec9c424e0dc2 SHA-256: 2f5e2a5a9ae675d428056d49102dc222c94832dc21226089e7325d4b2d215884
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically advertising game hacks and generators. These links lead to further PDFs hosted on ggmtc.net, indicating a chain of malicious lures. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or scam campaign.

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 http://netcdn.co/app/431946152/roblox-apoc-hacks-2021-op-game-hack In PDF document text
    • http://ggmtc.net/userfiles/files/redeem-robux-free_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-verification_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
font_00_sfnt_off00003013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3013 22092 bytes
SHA-256: b51b639e4c5bbc08ed906f0963b09f5457f41b9223e2e0bdca54d0e220de4ad0
font_01_sfnt_off00006125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6125 19236 bytes
SHA-256: 18ef0a533b8001adef8e2d63c1fd3f182f5a3555e2ee80c47acc098722cc1bb6

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