Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c5e1eb0e3579ff3…

MALICIOUS

PDF

34.7 KB Created: 2021-06-18 09:10:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 89c63fe9ef61c5e403b70c52f1f17d94 SHA-1: 28374493fe78d29cc98ba1ffc1e7ac7c670a473c SHA-256: 6c5e1eb0e3579ff3361f856d12ed9f47cf0b0ee25848f86030342114e75e8a9a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on luring users with promises of free game currency or hacks. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of the URL 'http://netcdn.co/app/431946152/how-to-get-free-robux-on-roblox-december-2021-game-hack' strongly indicate a phishing or scam attempt. The document body text reinforces this by mentioning 'free robux' and 'game hack', further supporting the malicious intent.

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-get-free-robux-on-roblox-december-2021-game-hack In PDF document text
    • http://library.atim.ac.id/repository/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-august-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-bis_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-easter-event-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-free-wings-in-catalog_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-t-shirt-size-free-shipping_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-robux-hack-pc-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/get-any-roblox-gamepass-free_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/robux-hack-working-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-open-the-roblox-hack-menu_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-high-school-life-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-items-on-roblox-may-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/mcdonaldsville-roblox-hack-script_GM431946152.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_off00002eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EEA 22088 bytes
SHA-256: 90edc7111af1cf8450ce0e21c0fa935aa03e33805a5d013814115e5cf43b2546
font_01_sfnt_off00006002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6002 19888 bytes
SHA-256: c38ab7f57b35bcf9499ca6f6fea07657617e133cfddd013d09914f91f2346cb4