Malicious PDF — malware analysis report

Static analysis result for SHA-256 488d12ee4a234309…

MALICIOUS

PDF

33.9 KB Created: 2021-06-25 23:28:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2f6422576e9a13431832dae17a144cef SHA-1: 4a10314bb0bc99ce02a87487057d3db0f5b69358 SHA-256: 488d12ee4a23430923538a92044e0fa25b9ef233f4d6afdc16559d888d2628f8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as malicious redirectors, specifically luring users with promises of game hacks and free currency. The primary malicious URL identified is http://netcdn.co/app/431946152/roblox-noclip-hack-2021-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt, likely leading to further malware download or credential harvesting.

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/roblox-noclip-hack-2021-game-hack In PDF document text
    • http://library.umuslim.ac.id//repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-roblox-red-pants_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-hack-client-download_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/rbx-earn_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-spin-app-2021_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D66 22072 bytes
SHA-256: 7dd5c6a70e27629ca9373f1905391aaa84a43b1782f8ed6d15b5c249a7ff27b2
font_01_sfnt_off00005e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E40 19352 bytes
SHA-256: d8f77e8ded6863815401c014e942e461c6f0f1dc04c32625687430fb80bfa368

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