Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d9a94ecb4568ee…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 03:17:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1bb67b2b11bd92b7f7fe5794476b6091 SHA-1: 7d36be45b2ece2af4353fe328add6e208842cfad SHA-256: 58d9a94ecb4568ee3177fd7da4c8293b1cca4625ab928bbf46fad496dd056d45
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game currency and hacks, directing users to a malicious redirector. The embedded URLs, such as http://netcdn.co/app/431946152/how-to-free-robux-100-virus-game-hack, are indicative of a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

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.co/app/431946152/how-to-free-robux-100-virus-game-hack In PDF document text
    • http://www.thecoffeebaron.co.za/images/counter-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-get-free-roblox-catalog-items-2021_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/roblox-how-to-sell-t-shirts-for-free-reddit_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-robux-gift-cards-2021_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/inf-health-script-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/hack-card-roblox_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/pubg-uc-20210_GM1330123889.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-get-free-robux-without-surveys-2021_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-get-wall-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-robux-code-inspect_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-get-free-clothes-from-catalog-roblox_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-free-spins-link-31-march-2021_GM406889139.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_off00003061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3061 22280 bytes
SHA-256: 2d314e3832afa4e0a19d6d027c961246dce73861d4f0632edfd6fdf52504a9a0
font_01_sfnt_off000061f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F9 19412 bytes
SHA-256: d7e9d234936742959551edd950fc1bba711ae07994ece5a4963ed6af62508618