Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a092c0adee37ddb…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 22:19:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 203bdd46331ae85c26910755e7aec905 SHA-1: e9a30a28c4f1904324bc4c9fc382979fc091a7f6 SHA-256: 9a092c0adee37ddba6a505479d1116ac241cbca39b8f1acfd25b78efdc816d0c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or malware distribution attempt. The primary URL, http://netcdn.tw/app/406889139/coin-master-free-coins-and-spins-link-today-game-hack, is flagged as malicious. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful websites.

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.tw/app/406889139/coin-master-free-coins-and-spins-link-today-game-hack In PDF document text
    • http://astdubai.co/userfiles/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/hack-roblox-cheat-engine-63_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-cheat-codes-for-bee-swarm_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-no-tests_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-without-verifying_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_off00003001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3001 22748 bytes
SHA-256: f4faf12e6da8ee9291dbe2ab7cf15866d048787b2fc05bd0f8120cf3ef5d563b
font_01_sfnt_off000062e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E4 18696 bytes
SHA-256: 31669538ff40287ff7f58bdcd26457d43685aec4be0ef4186bcc350705393131

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