Malicious PDF — malware analysis report

Static analysis result for SHA-256 e68cd44da71275e8…

MALICIOUS

PDF

43.0 KB Created: 2021-06-03 16:12:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 87df03a75a3a16ebccb6b21bdd8fae41 SHA-1: a8f93607e79afcf881fec5bde6b9ba222b4a657f SHA-256: e68cd44da71275e84da0110ff130bdc16714e402c2131dc69ac50e81809b15f3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'free generators' and 'game hacks'. The primary malicious URL identified is https://netcdn.online/app/406889139/free-spins-on-coin-master-hack-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector designed to lure users to potentially harmful content, likely leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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.online/app/406889139/free-spins-on-coin-master-hack-game-hack In PDF document text
    • https://www.jcn.co.uk/uploads/files/files/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-hack-xyz-apk-download_GM406889139.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_004_off00004d6e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D6E 25140 bytes
SHA-256: 802e41a8072e412f168e33c0d47c2cea6e51e1e9df1c75fc594e9c6fee6888f5
font_01_sfnt_off000085f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F9 18056 bytes
SHA-256: 1ec632e038d0c04011fe278bb525ef2e6f04a80dea9ba5596062fb9c77cb7c11

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