Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e13de1b1a0a5a90…

MALICIOUS

PDF

48.3 KB Created: 2021-06-09 05:14:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 414355b6d20fe8257abe7a52bc449d95 SHA-1: a61cc161562933f1ba9b305e351aa3a98608682e SHA-256: 6e13de1b1a0a5a90c3eb0abebab3845bfcd2aac877749ade0a4f706d68193e39
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The primary lure directs users to 'netcdn.tw', which is associated with malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious workflow designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/how-to-cheat-in-booga-booga-roblox-game-hack In PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/wurst-112_GM479516143.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-code-hack_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-hack-1021_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000514e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x514E 25156 bytes
SHA-256: cb58f3430218a3894e1e40ac28effe8af7d6b48f913b4fa1d4f1e0334c1ed020
font_01_sfnt_off00008bdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BDC 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9884 18732 bytes
SHA-256: e1cf56f54b6f1f3d1580cd300c75fbb47b1781d868ea2fd757d93f93b2f44b5a

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