Malicious PDF — malware analysis report

Static analysis result for SHA-256 e554b6973596fc76…

MALICIOUS

PDF

43.8 KB Created: 2021-05-12 02:03:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 175509d072b8149dc57b9fc03d12c136 SHA-1: 6a2c19f01a9f47a5431b97ffb5681fdb0c25a774 SHA-256: e554b6973596fc764ce1525fa011eace59f488439f0732b70a54a67dc75369a3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary malicious URL identified is https://netcdn.xyz/app/431946152/earnrobux-game-hack. This lure is designed to trick users into visiting a potentially harmful site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/earnrobux-game-hack In PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-get-free-robux-2021-no-human-verification_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_off000048f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F7 28596 bytes
SHA-256: fc4feae5986e62134ac3d44f0fff94d9b4d6e6d18d6dc7042051d666a8d61f2c
font_01_sfnt_off00008985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8985 18076 bytes
SHA-256: 2721194a66b32dfdaea4e26ed0bd84b304de41eeda81871a4ffc347c5a8adb25

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