Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c838422693b1619…

MALICIOUS

PDF

32.6 KB Created: 2021-07-22 06:33:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4da0e985a31f480eb48ba46184c40b7e SHA-1: 974ece7090825df7cc4923542d40a566fbf5e88e SHA-256: 0c838422693b1619fbdc795a6e23303cfa40bcb901ab42de922969059a0668d8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them under the guise of free Robux or game hacks. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/431946152/free-robux-redeem-codes-game-hack In PDF document text
    • http://www.copoint.co.uk/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://www.copoint.co.uk/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.copoint.co.uk/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://www.copoint.co.uk/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://www.copoint.co.uk/images/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://www.copoint.co.uk/images/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://www.copoint.co.uk/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.copoint.co.uk/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://www.copoint.co.uk/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://www.copoint.co.uk/images/minecraft-free-download-pc_GM479516143.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_off00002a05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A05 22584 bytes
SHA-256: 3a268f14cc767c65bd91cee16f4eb0016b57643e9a7f14d3e06e10c8e2eecb82
font_01_sfnt_off00005c78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C78 18636 bytes
SHA-256: b0c51944a8347bc67ccb532b6acd94e2fea0a8def335517a16bc099c68f22d4f

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