Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cb2e295350837bb…

MALICIOUS

PDF

44.5 KB Created: 2021-05-13 23:30:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: cd40bf2b74f4db9bd56239bff9c0db86 SHA-1: b59b733507216f166340a67798a1699cecbb0193 SHA-256: 5cb2e295350837bb6171aba2f057ae71324f66f0f9145dd1173f24abbbd37c02
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector at 'https://netcdn.xyz/app/431946152/easy-how-to-get-free-robux-game-hack'. The document body and embedded links suggest a lure for free game currency or hacks, designed to entice users to click through to potentially malicious content. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a phishing or social engineering attack.

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 https://netcdn.xyz/app/431946152/easy-how-to-get-free-robux-game-hack In PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/coin-master-village-4_GM406889139.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustakasma.nurulfikri.sch.id/repository/how-to-hack-peoples-roblox-accounts_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
stream_003_off000049fb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49FB 28004 bytes
SHA-256: 135c3c5735da79b8e8e71a22f9042756240431d218f348ce25cf07d7fc319e40
font_01_sfnt_off00008a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3B 18688 bytes
SHA-256: c2d85703cc6a1447500036b33f7ea43eb33cd1174df43eac9260fbff62206025

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