Malicious PDF — malware analysis report

Static analysis result for SHA-256 c92d03615d800581…

MALICIOUS

PDF

45.3 KB Created: 2021-05-10 21:36:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 9ee4ea323efe9a7c755776a37cc3bd41 SHA-1: 0dffcdf15d685f40a5942ab548bb60895dec69fc SHA-256: c92d03615d800581970131b41b1053aac316b1fa9a42569c922859c1ce364634
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. These links, such as 'https://netcdn.xyz/app/431946152/roblox-army-free-robux-game-hack', are designed to lead users to potentially harmful content or further malware. The presence of a visual download button heuristic further supports the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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/roblox-army-free-robux-game-hack In PDF document text
    • http://zibai.eu/images/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://zibai.eu/images/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://zibai.eu/images/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://zibai.eu/images/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://zibai.eu/images/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://zibai.eu/images/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://zibai.eu/images/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://zibai.eu/images/free-group-roblox_GM431946152.pdfIn PDF document text
    • http://zibai.eu/images/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://zibai.eu/images/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://zibai.eu/images/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://zibai.eu/images/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://zibai.eu/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://zibai.eu/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://zibai.eu/images/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://zibai.eu/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://zibai.eu/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://zibai.eu/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://zibai.eu/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://zibai.eu/images/can-you-get-robux-for-free_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47C7 25036 bytes
SHA-256: a2959dc58ecfc30968bdd9316aafb3c53904f1ced27c3279e8345ba1d1d59a0f
font_01_sfnt_off0000809d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x809D 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00008daf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DAF 18528 bytes
SHA-256: 3fb3182e9b0518fecce2d6326c4443e9fc052433b5a2fc23416796f92e2510b3

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