Malicious PDF — malware analysis report

Static analysis result for SHA-256 cce8b1a6a1bb4393…

MALICIOUS

PDF

34.5 KB Created: 2021-06-28 21:44:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 107c1589abae516e53637e87554bf8be SHA-1: c8037cab95775fee02af7317c1874042673898e4 SHA-256: cce8b1a6a1bb439318e76fe06fb952cfd04500a45968310ea3137a3a7c4561d1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free Robux generators'. The primary link, http://netcdn.co/app/431946152/hack-como-tener-robux-gratis-game-hack, is flagged as a malicious redirector. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to exploit user interest in obtaining in-game currency or cheats, likely leading to further malware download or phishing.

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/hack-como-tener-robux-gratis-game-hack In PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/javascript-robux-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-cheat-engine-bypass-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-hack-cheat-engine-jailbreak_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/hacks-for-assassin-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-free-robux-in-roblox-pc-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-cbro-hacks-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-free-robux-club_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-smoke-roblox-id_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/gamehackbiz-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-clothing-roblox-group_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-roblox-exploit-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-espaol_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/get-free-robux-now_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E1C 22744 bytes
SHA-256: 5ca6faa4b8e02b691599316313358953b08f2a15105347a084b1fdc095547290
font_01_sfnt_off0000611d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611D 19204 bytes
SHA-256: c3b95b0a25ed92de2488584e052d7038e2c39baa49d6fb5a651b8db818791c2b

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