Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cbaa1b732b4d75a…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 02:20:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a46ec86235fba3775306113363d8629c SHA-1: 6a1701ef703d71d079a1626757cea1fd4aaff5fa SHA-256: 7cbaa1b732b4d75af4463bcf610184c247081a91b8b7bd7e2f1534741c2d6153
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free Robux' and game hacks. The document body explicitly contains the URL http://netcdn.co/app/431946152/free-robux-from-surveys-game-hack, which is also flagged by heuristics as a malicious redirector. This indicates a phishing or scam attempt designed to lure users to potentially harmful websites.

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/free-robux-from-surveys-game-hack In PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-account-giveaway-roblox-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/https-ninja-hack-club-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hacks-robux-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-114-download_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/what-tiktok-free-will_GM835599320.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-roblox-simulator-de-levantamiento-de-pesas-3_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-do-you-hack-in-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/haktuts-coin-master-free-spin-link_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_off00002eca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECA 22660 bytes
SHA-256: d566c569aedeae4ff6cbede0fd1b544f36e93aff070bfb0d2580f3955a059acb
font_01_sfnt_off0000615c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615C 19084 bytes
SHA-256: 10abe0fd72ca9425c6395a3cb6f188d294ae5f82933ae59caefb1a335393b404

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