Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cadd08cf375748e…

MALICIOUS

PDF

42.0 KB Created: 2021-05-14 03:01:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: dd1498454560432336b12179aaeade85 SHA-1: 033153f517c56cbfea82355f82e1d74198db7fe1 SHA-256: 7cadd08cf375748eaea8a024f862354b762109f32b1fef9de43ecc91fdf7ad89
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a social engineering attempt to trick users into visiting potentially harmful websites. The primary lure is for 'Coin Master' game hacks, directing users to the URL https://netcdn.xyz/app/406889139/daily-free-spins-for-coin-master-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a malicious redirector workflow, likely intended to deliver a second-stage payload or lead to a phishing page.

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/406889139/daily-free-spins-for-coin-master-game-hack In PDF document text
    • https://ceiprevellodetoro.org/images/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/roblox-robux_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/roblox40com-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000485b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x485B 24864 bytes
SHA-256: 322548c7291a0501cbfd56787d617110375598dcb9e81b6b589b54fb31abd446
font_01_sfnt_off000081bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BB 18308 bytes
SHA-256: b750d5a8b44caccc122b2ff8294eb9307e18e87e3916697a2a7f0c063c77f291

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