Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3c195cf68a495cd…

MALICIOUS

PDF

34.8 KB Created: 2021-06-20 05:18:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 76119cf1ef2f32cb9e42b6dcdf0b558c SHA-1: 114c074a2428f455ed5c97d26dacddb1b92ce0b1 SHA-256: a3c195cf68a495cd78a6cd05004a302acabb27fad7aa858d984b87a8b0e00034
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to known malicious redirector infrastructure, specifically designed to lure users into clicking on 'game hack' or 'free generator' content. The document body and heuristics indicate a clear intent to redirect users to the URL http://netcdn.co/app/431946152/put-cheat-codes-roblox-bubblegum-game-hack, which is associated with malicious redirectors.

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/put-cheat-codes-roblox-bubblegum-game-hack In PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-roblox-every-day_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-roblox-2021-march_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/apk-robux-hack_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-studio-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/http-blackgamesus-coinmasterhack_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/husky-roblox-obby-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-roblox-from-promocodes-for-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF8 22288 bytes
SHA-256: ff3d5ffc24f3dcdc144a0a27558c7e09f53e20f6e4e1b43e972a9d39fcbcdbc4
font_01_sfnt_off000061b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B1 19484 bytes
SHA-256: 5e4a66428a3a13ff814ce0ad219e1b0946e3c45915e585f6707644230ff63649

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